Medium
File handling exploit reference
CVE-2021-29425 — Possible limited path traversal vulnerabily in Apache Commons IO
In Apache Commons IO before 2.7, When invoking the method FileNameUtils.normalize with an improper input string, like "//../foo", or "\\..\foo", the result would be the same value, thus possibly providing access to files in the parent directory, but not further above (thus "limited" path traversal), if the calling code would use the result to construct a path value.
20
Low
Who exploits it and how urgent it is
A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.
No exploitation signal in the sources consulted so far.
How the score was calculated
- EPSS 10.5% (30-day exploitation probability)+14
- Technical severity (medium)+3
- Automatable exploitation (SSVC)+3
The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).
Triage
Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.
Exploitation
Not confirmed
Not in CISA KEV — an absence of record, not proof it is unexploited.
EPSS FIRST
10.55%
ahead of 96% of scored CVEs · Oct 15, 2026
Affects
Apache Software Foundation
Commons Io and 59 more
CVSS base
4.8
Medium · 3 source(s)
Prioritization reference: 6.5 provisional
CISA SSVC assessment CISA
Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.
Exploitation
None
none · proof-of-concept · active
Automatable
Yes
can an attacker script the kill-chain steps
Technical impact
Partial
partial · total control of the vulnerable component
Remediation
Fixes and mitigations documented by the sources — linked to the original advisory.
- Documented patch — www.oracle.com (NIST National Vulnerability Database)
- Documented patch — www.oracle.com (NIST National Vulnerability Database)
- Documented patch — www.oracle.com (NIST National Vulnerability Database)
First 24 hours
Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.
- Identify exposed assets running the affected vendor/product/version combinations (Apache Software Foundation Commons Io, Debian Debian Linux, Netapp Active Iq Unified Manager…).
- The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
- Apply the fixed version or the patch documented under Remediation.
- EPSS ahead of 96% of scored CVEs: prioritize it in the patch queue.
- Search available logs for exploit probes matching the vulnerability class (file handling), errors and authentication anomalies.
Affected scope
Vendor, product and versions as the sources word them.
| Vendor | Product | Versions | Status | Source |
|---|---|---|---|---|
| Apache Software Foundation | Commons Io | version Apache Commons IO 2.6version Apache Commons IO 2.5version Apache Commons IO 2.4version Apache Commons IO 2.3version Apache Commons IO 2.2 | Vulnerable | CVE Program (cve.org) e CISA ADP |
| Apache Software Foundation | Commons Io | version 2.2version 2.3version 2.4version 2.5version 2.6 | Vulnerable | NIST National Vulnerability Database |
| Debian | Debian Linux | version 9.0 | Vulnerable | NIST National Vulnerability Database |
| Netapp | Active Iq Unified Manager | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Oracle | Access Manager | version 11.1.2.3.0version 12.2.1.3.0version 12.2.1.4.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Agile Engineering Data Management | version 6.2.1.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Agile Product Lifecycle Management | version 9.3.6 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Application Performance Management | version 13.4.1.0version 13.5.1.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Application Testing Suite | version 13.3.0.1 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Banking Apis | version 18.1version 18.2version 18.3version 19.1version 19.2version 20.1version 21.1 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Banking Digital Experience | version 17.2version 18.1version 18.3version 19.1version 19.2version 20.1version 21.1 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Banking Enterprise Default Management | version 2.6.2version 2.7.0version 2.7.1version 2.10.0version 2.12.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Banking Enterprise Default Managment | ≥ 2.3.0 and ≤ 2.4.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Banking Party Management | version 2.7.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Banking Platform | ≥ 2.3.0 and ≤ 2.4.1version 2.6.2version 2.7.0version 2.7.1 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Blockchain Platform | < 21.1.2 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Commerce Guided Search | version 11.3.2 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Communications Application Session Controller | version 3.9.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Communications Billing And Revenue Management Elastic Charging Engine | version 11.3version 12.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Communications Cloud Native Core Network Repository Function | version 1.14.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Communications Cloud Native Core Policy | version 1.14.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Communications Cloud Native Core Unified Data Repository | version 1.4.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Communications Contacts Server | version 8.0.0.6.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Communications Converged Application Server - Service Controller | version 6.2 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Communications Convergence | version 3.0.2.2.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Communications Design Studio | ≥ 7.4.0 and ≤ 7.4.2version 7.3.5 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Communications Diameter Intelligence Hub | ≥ 8.0.0 and ≤ 8.1.0≥ 8.2.0 and ≤ 8.2.3 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Communications Interactive Session Recorder | version 6.3version 6.4 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Communications Offline Mediation Controller | version 12.0.0.3 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Communications Order And Service Management | version 7.4version 7.3 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Communications Policy Management | version 12.5.0.0.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Communications Pricing Design Center | version 12.0.0.4.0version 12.0.0.5.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Communications Service Broker | version 6.2 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Enterprise Communications Broker | version 3.3 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Enterprise Session Border Controller | version 8.4version 9.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Financial Services Analytical Applications Infrastructure | ≥ 8.0.7 and ≤ 8.1.1 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Financial Services Model Management And Governance | ≥ 8.0.8 and ≤ 8.1.1 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Flexcube Core Banking | ≥ 11.6.0 and ≤ 11.8.0version 5.2.0version 11.10.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Fusion Middleware Mapviewer | version 12.2.1.4.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Health Sciences Data Management Workbench | version 3.0.0.0version 2.5.2.1 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Health Sciences Information Manager | ≥ 3.0.1 and ≤ 3.0.4 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Healthcare Data Repository | version 8.1.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Helidon | version 2.2.0version 1.4.7 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Insurance Policy Administration | version 11.0.2version 11.1.0version 11.2.8version 11.3.0version 11.3.1 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Insurance Rules Palette | version 11.0.2version 11.1.0version 11.2.8version 11.3.0version 11.3.1 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Oss Support Tools | < 2.12.42 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Primavera Unifier | ≥ 17.7 and ≤ 17.12version 18.8version 19.12version 20.12version 21.12 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Real User Experience Insight | version 13.5.1.0version 13.4.1.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Rest Data Services | < 21.2version 21.3 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Retail Assortment Planning | version 16.0.3 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Retail Integration Bus | ≥ 16.0.1 and ≤ 16.0.3version 13.0version 14.1.3.0version 14.1.3.2version 15.0.3.1version 19.0.0version 19.0.1 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Retail Merchandising System | version 16.0.3version 19.0.1 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Retail Order Broker | version 16.0version 18.0version 19.1 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Retail Pricing | version 19.0.1 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Retail Service Backbone | ≥ 16.0.1 and ≤ 16.0.3version 14.1.3.0version 14.1.3.2version 15.0.3.1version 19.0.0version 19.0.1 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Retail Size Profile Optimization | version 16.0.3 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Retail Xstore Point Of Service | version 17.0.4version 18.0.3version 19.0.2version 20.0.1 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Solaris Cluster | version 4.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Utilities Testing Accelerator | version 6.0.0.1.1version 6.0.0.2.2version 6.0.0.3.1 | Vulnerable | NIST National Vulnerability Database |
| Oracle | WebCenter Portal | version 12.2.1.3.0version 12.2.1.4.0 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Weblogic Server | version 12.1.3.0.0version 12.2.1.3.0version 12.2.1.4.0version 14.1.1.0.0 | Vulnerable | NIST National Vulnerability Database |
Attack characteristics
The CVSS vector, decoded. It describes the attack, not your exposure to it.
Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Every base score collected
Sources score independently and may disagree; each row says who scored it and under which version.
| Score | Version | Severity | Expl. | Impact | Scored by |
|---|---|---|---|---|---|
| 6.5 | CVSS 3.1 | Medium | 3.9 | 2.5 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 via NIST National Vulnerability Database |
| 6.5 | CVSS 3.1 | Medium | — | — | CISA-ADP via CVE Program (cve.org) e CISA ADP |
| 4.8 | CVSS 3.1 | Medium | 2.2 | 2.5 | nvd@nist.gov via NIST National Vulnerability Database |
| 5.8 | CVSS 2.0 | Medium | 8.6 | 4.9 | nvd@nist.gov via NIST National Vulnerability Database |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N (score shown at the top: nvd@nist.gov)
Scoring entities (NIST, CNA, ADP) score independently; each score is shown with its origin. For prioritization we use 6.5 (CISA ADP via NIST National Vulnerability Database) as a conservative provisional reference — not a definitive official score.
Weakness MITRE
Weakness class according to MITRE’s CWE catalog.
EPSS over time FIRST
Oct 13, 2026 → Oct 15, 2026 · 3 reading(s) · max 10.55%
Detection
Read off the CVSS vector and the weakness class. Starting points, not tested rules.
- Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
- Monitor file creation in web directories and paths with traversal sequences (../).
Timeline
What happened to this CVE, newest first.
- 2026
- Affected products added · apache software foundation/apache commons io
- SSVC assessment updated
- Record published
- Fix documented
- CVSS changed · 4.8
- Source status changed · → Modified
- Record created in this database
- 2021
- CVE published
Source activity
Repeated readings are counted rather than listed.
- 1× Official description updated · Oct 13, 2026 – Oct 13, 2026
References
47 on the record
- lists.apache.org/thread.html/rc359823b5500e9a9a2572678ddb8e01d3505a7ffcadfa8d13b8780ab
- issues.apache.org/jira/browse/IO-556
- www.oracle.com/security-alerts/cpujul2022.html
- www.oracle.com/security-alerts/cpuapr2022.html
- www.oracle.com/security-alerts/cpujan2022.html
- lists.apache.org/thread.html/rfa2f08b7c0caf80ca9f4a18bd875918fdd4e894e2ea47942a4589b9c
- lists.apache.org/thread.html/rfd01af05babc95b8949e6d8ea78d9834699e1b06981040dde419a330
- lists.apache.org/thread.html/r523a6ffad58f71c4f3761e3cee72df878e48cdc89ebdce933be1475c
- lists.apache.org/thread.html/r27b1eedda37468256c4bb768fde1e8b79b37ec975cbbfd0d65a7ac34
- lists.apache.org/thread.html/rc2dd3204260e9227a67253ef68b6f1599446005bfa0e1ddce4573a80
- lists.apache.org/thread.html/r01b4a1fcdf3311c936ce33d75a9398b6c255f00c1a2f312ac21effe1
- lists.apache.org/thread.html/r462db908acc1e37c455e11b1a25992b81efd18e641e7e0ceb1b6e046
- lists.apache.org/thread.html/re41e9967bee064e7369411c28f0f5b2ad28b8334907c9c6208017279
- lists.apache.org/thread.html/r20416f39ca7f7344e7d76fe4d7063bb1d91ad106926626e7e83fb346
- lists.apache.org/thread.html/rd09d4ab3e32e4b3a480e2ff6ff118712981ca82e817f28f2a85652a6
- lists.apache.org/thread.html/red3aea910403d8620c73e1c7b9c9b145798d0469eb3298a7be7891af
- lists.apache.org/thread.html/ra8ef65aedc086d2d3d21492b4c08ae0eb8a3a42cc52e29ba1bc009d8
- lists.apache.org/thread.html/r0d73e2071d1f1afe1a15da14c5b6feb2cf17e3871168d5a3c8451436
- lists.apache.org/thread.html/rc5f3df5316c5237b78a3dff5ab95b311ad08e61d418cd992ca7e34ae
- lists.debian.org/debian-lts-announce/2021/08/msg00016.html
- security.netapp.com/advisory/ntap-20220210-0004/
- lists.apache.org/thread.html/r4050f9f6b42ebfa47a98cbdee4aabed4bb5fb8093db7dbb88faceba2
- www.oracle.com/security-alerts/cpuoct2021.html
- lists.apache.org/thread.html/r86528f4b7d222aed7891e7ac03d69a0db2a2dfa17b86ac3470d7f374
- lists.apache.org/thread.html/raa053846cae9d497606027816ae87b4e002b2e0eb66cb0dee710e1f5
- lists.apache.org/thread.html/rbebd3e19651baa7a4a5503a9901c95989df9d40602c8e35cb05d3eb5
- lists.apache.org/thread.html/rca71a10ca533eb9bfac2d590533f02e6fb9064d3b6aa3ec90fdc4f51
- lists.apache.org/thread.html/rc65f9bc679feffe4589ea0981ee98bc0af9139470f077a91580eeee0
- lists.apache.org/thread.html/rfcd2c649c205f12b72dde044f905903460669a220a2eb7e12652d19d
- lists.apache.org/thread.html/r92ea904f4bae190b03bd42a4355ce3c2fbe8f36ab673e03f6ca3f9fa
- lists.apache.org/thread.html/rad4ae544747df32ccd58fff5a86cd556640396aeb161aa71dd3d192a
- lists.apache.org/thread.html/r873d5ddafc0a68fd999725e559776dc4971d1ab39c0f5cc81bd9bc04
- lists.apache.org/thread.html/r808be7d93b17a7055c1981a8453ae5f0d0fce5855407793c5d0ffffa
- lists.apache.org/thread.html/r477c285126ada5c3b47946bb702cb222ac4e7fd3100c8549bdd6d3b2
- lists.apache.org/thread.html/r2345b49dbffa8a5c3c589c082fe39228a2c1d14f11b96c523da701db
- lists.apache.org/thread.html/rc10fa20ef4d13cbf6ebe0b06b5edb95466a1424a9b7673074ed03260
- lists.apache.org/thread.html/r5149f78be265be69d34eacb4e4b0fc7c9c697bcdfa91a1c1658d717b
- lists.apache.org/thread.html/r1c2f4683c35696cf6f863e3c107e37ec41305b1930dd40c17260de71
- lists.apache.org/thread.html/r8bfc7235e6b39d90e6f446325a5a44c3e9e50da18860fdabcee23e29
- lists.apache.org/thread.html/r8569a41d565ca880a4dee0e645dad1cd17ab4a92e68055ad9ebb7375
- lists.apache.org/thread.html/r2bc986a070457daca457a54fe71ee09d2584c24dc262336ca32b6a19
- lists.apache.org/thread.html/r47ab6f68cbba8e730f42c4ea752f3a44eb95fb09064070f2476bb401
- lists.apache.org/thread.html/r345330b7858304938b7b8029d02537a116d75265a598c98fa333504a
- lists.apache.org/thread.html/r2721aba31a8562639c4b937150897e24f78f747cdbda8641c0f659fe
- lists.apache.org/thread.html/r8efcbabde973ea72f5e0933adc48ef1425db5cde850bf641b3993f31
- lists.apache.org/thread.html/r2df50af2641d38f432ef025cd2ba5858215cc0cf3fc10396a674ad2e
- lists.apache.org/thread.html/r0bfa8f7921abdfae788b1f076a12f73a92c93cc0a6e1083bce0027c5
Elsewhere on this site
Related CVEs (same products)
- High CVE-2026-87266 Improper Access Control in Oracle Agile Product Lifecycle Management Sep 15, 2026
- High CVE-2026-87256 Improper Access Control in Oracle Agile Product Lifecycle Management Sep 15, 2026
- High CVE-2026-87258 Improper Access Control in Oracle Agile Product Lifecycle Management Sep 15, 2026
- High CVE-2026-87257 Improper Access Control in Oracle Agile Product Lifecycle Management Sep 15, 2026
- High CVE-2026-87254 Improper Access Control in Oracle Agile Product Lifecycle Management Sep 15, 2026
- Medium CVE-2026-87253 Improper Access Control in Oracle Agile Product Lifecycle Management Sep 15, 2026
Not in any source we poll
Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.
- No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
- No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
- No exploit packet captures, log samples, or incident case IDs supplied.
Answered from this record
Text assembled only from the fields above — no additional claims.
What should defenders know first?
CVE-2021-29425 is "Possible limited path traversal vulnerabily in Apache Commons IO", rated Medium. It affects Commons Io (Apache Software Foundation); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 4.8 describes technical severity. EPSS 10.55% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.
Comments
Moderated technical discussion. Read the community guidelines.
No comments yet.
Sign in or create an account to comment and suggest corrections.