CVE-2022-29824 — In libxml2 before 2.9.14, several buffer handling functions in buf.c (xmlBuf*) and tree.c ...
In libxml2 before 2.9.14, several buffer handling functions in buf.c (xmlBuf*) and tree.c (xmlBuffer*) don't check for integer overflows. This can result in out-of-bounds memory writes. Exploitation requires a victim to open a crafted, multi-gigabyte XML file. Other software using libxml2's buffer functions, for example libxslt through 1.1.35, is affected as well.
Who exploits it and how urgent it is
A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.
How the score was calculated
- EPSS 3.8% (30-day exploitation probability)+13
- Technical severity (medium)+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.
Remediation
Fixes and mitigations documented by the sources — linked to the original advisory.
- Documented patch — gitlab.gnome.org (NIST National Vulnerability Database)
- Documented patch — gitlab.gnome.org (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 (Debian Debian Linux, Fedoraproject Fedora, 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.
- Exploitation requires user interaction: tighten email/web filtering and warn affected users.
- Search available logs for exploit probes matching the vulnerability class (memory corruption), errors and authentication anomalies.
Affected scope
Vendor, product and versions as the sources word them.
| Vendor | Product | Versions | Status | Source |
|---|---|---|---|---|
| Debian | Debian Linux | version 9.0version 10.0version 11.0 | Vulnerable | NIST National Vulnerability Database |
| Fedoraproject | Fedora | version 35version 36version 34 | Vulnerable | NIST National Vulnerability Database |
| Netapp | Active Iq Unified Manager | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | Clustered Data Ontap | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | Clustered Data Ontap Antivirus Connector | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | H300s Firmware | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | H410c Firmware | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | H410s Firmware | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | H500s Firmware | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | H700s Firmware | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | Manageability Software Development Kit | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | Ontap Select Deploy Administration Utility | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | Smi-s Provider | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | Snapdrive | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | Snapmanager | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | Solidfire & Hci Management Node | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Oracle | Zfs Storage Appliance Kit | version 8.8 | Vulnerable | NIST National Vulnerability Database |
| Xmlsoft | Libxml2 | < 2.9.14 | Vulnerable | NIST National Vulnerability Database |
| Xmlsoft | Libxslt | ≤ 1.1.35 | Vulnerable | NIST National Vulnerability Database |
Attack characteristics
The CVSS vector, decoded. It describes the attack, not your exposure to it.
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 | 2.8 | 3.6 | nvd@nist.gov via NIST National Vulnerability Database |
| 6.5 | CVSS 3.1 | Medium | — | — | GitHub, Inc. via GitHub Security Advisories |
| 4.3 | CVSS 2.0 | Medium | 8.6 | 2.9 | nvd@nist.gov via NIST National Vulnerability Database |
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H (score shown at the top: nvd@nist.gov) Weakness MITRE
Weakness class according to MITRE’s CWE catalog.
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).
- Correlate service crashes/restarts with inbound traffic; repeated crashes may indicate attempts.
Timeline
What happened to this CVE, newest first.
- 2026
- Record published
- Fix documented
- Affected products added · xmlsoft/libxml2, xmlsoft/libxslt, fedoraproject/fedora, debian/debian linux, netapp/active iq unified manager, netapp/cl
- CVSS changed · 6.5
- Source status changed · → Modified
- Record created in this database
- 2022
- CVE published
Source activity
Repeated readings are counted rather than listed.
- 2× References added · Oct 14, 2026 – Oct 14, 2026
- 1× Official description updated · Oct 14, 2026 – Oct 14, 2026
References
20 on the record
- www.oracle.com/security-alerts/cpujul2022.html
- gitlab.gnome.org/GNOME/libxml2/-/commit/6c283d83eccd940bcde15634ac8c7f100e3caefd
- gitlab.gnome.org/GNOME/libxml2/-/commit/2554a2408e09f13652049e5ffb0d26196b02ebab
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FZOB
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P536
- security.netapp.com/advisory/ntap-20220715-0006/
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/P5363E
- www.debian.org/security/2022/dsa-5142
- packetstormsecurity.com/files/167345/libxml2-xmlBufAdd-Heap-Buffer-Overflow.html
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P3NV
- gitlab.gnome.org/GNOME/libxslt/-/tags
- gitlab.gnome.org/GNOME/libxml2/-/tags/v2.9.14
- github.com/advisories/GHSA-3rrw-pv9w-qgch
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/P3NVZV
- packetstormsecurity.com/files/169825/libxml2-xmlParseNameComplex-Integer-Overflow.html
- nvd.nist.gov/vuln/detail/CVE-2022-29824
- security.gentoo.org/glsa/202210-03
- cert-portal.siemens.com/productcert/html/ssa-398330.html
- lists.debian.org/debian-lts-announce/2022/05/msg00023.html
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FZOBT5
Elsewhere on this site
Related CVEs (same products)
- High CVE-2026-86142 Heap-based Buffer Overflow in Xmlsoft Libxml2 Sep 5, 2026
- High CVE-2026-86144 Incorrect Resource Transfer Between Spheres in Xmlsoft Libxml2 Sep 5, 2026
- High CVE-2026-86143 In xmlIO in libxml2 before 2.15.4, an inconsistency in xmlOutputWriteCallback and… Sep 5, 2026
- Low CVE-2026-86141 Unchecked Return Value in Xmlsoft Libxml2 Sep 5, 2026
- High CVE-2026-86140 Stack-based Buffer Overflow in Xmlsoft Libxml2 Sep 5, 2026
- High CVE-2026-86138 Integer Overflow or Wraparound in Xmlsoft Libxml2 Sep 5, 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 CISA SSVC assessment.
- 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-2022-29824 is "In libxml2 before 2.9.14, several buffer handling functions in buf.c (xmlBuf*) and tree.c ...", rated Medium. It affects Debian Linux (Debian); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 6.5 describes technical severity. EPSS 3.75% 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.
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