CVE-2010-0840 — Oracle JRE Unspecified Vulnerability
Unspecified vulnerability in the Java Runtime Environment component in Oracle Java SE and Java for Business 6 Update 18, 5.0 Update 23, and 1.4.2_25 allows remote attackers to affect confidentiality, integrity, and availability via unknown vectors. NOTE: the previous information was obtained from the March 2010 CPU. Oracle has not commented on claims from a reliable researcher that this is related to improper checks when executing privileged methods in the Java Runtime Environment (JRE), which allows attackers to execute arbitrary code via (1) an untrusted object that extends the trusted class but has not modified a certain method, or (2) "a similar trust issue with interfaces," aka "Trusted Methods Chaining Remote Code Execution Vulnerability."
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
- Confirmed exploitation (CISA KEV)+35
- Public exploit/PoC (metasploit, exploitdb)+20
- EPSS 96.3% (30-day exploitation probability)+15
- Technical severity (critical)+10
- 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.
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.
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)
CISA required action CISA
Apply updates per vendor instructions.
US federal deadline: Jun 15, 2022 — passed 1583 day(s) ago
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 (Canonical Ubuntu Linux, Opensuse Opensuse, Oracle Jre).
- Treat as emergency remediation: the CVE is in CISA KEV (confirmed exploitation).
- 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 100% of scored CVEs: prioritize it in the patch queue.
- Search available logs for exploit probes, errors and authentication anomalies.
Affected scope
Vendor, product and versions as the sources word them.
| Vendor | Product | Versions | Status | Source |
|---|---|---|---|---|
| Canonical | Ubuntu Linux | version 8.04version 8.10version 9.04version 9.10 | Vulnerable | NIST National Vulnerability Database |
| Opensuse | Opensuse | version 11.0version 11.1version 11.2 | Vulnerable | NIST National Vulnerability Database |
| Oracle | Jre | version 1.4.2_25version 1.5.0-update23version 1.6.0-update18 | 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 |
|---|---|---|---|---|---|
| 9.8 | CVSS 3.1 | Critical | 3.9 | 5.9 | nvd@nist.gov via NIST National Vulnerability Database |
| 9.8 | CVSS 3.1 | Critical | 3.9 | 5.9 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 via NIST National Vulnerability Database |
| 9.8 | CVSS 3.1 | Critical | — | — | GitHub, Inc. via GitHub Security Advisories |
| 9.8 | CVSS 3.1 | Critical | — | — | CISA-ADP via CVE Program (cve.org) e CISA ADP |
| 7.5 | CVSS 2.0 | High | 10.0 | 6.4 | nvd@nist.gov via NIST National Vulnerability Database |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (score shown at the top: nvd@nist.gov) CISA KEV details CISA
CISA lists a CVE once it has evidence of exploitation against real targets.
CISA records ransomware use only for campaigns it has confirmed, so “Unknown” means unrecorded, not ruled out. The deadline binds US federal agencies; for everyone else it is a reference date.
Public exploits, PoCs and detection templates
Public code that demonstrates or tests the flaw raises the odds of mass exploitation — and Nuclei templates help find vulnerable assets in your environment.
- Java Statement.invoke() Trusted Method Chain Privilege Escalation excellent Mar 31, 2010
- Java - 'Statement.invoke()' Trusted Method Chain (Metasploit) verified Dec 15, 2010
Warning: public PoCs are sometimes disguised malware. Use them only for authorized testing in an isolated environment. This portal does not host exploit code — it only points to the sources.
EPSS over time FIRST
Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 96.32%
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).
- Hunt retroactively in logs from before May 25, 2022 (KEV listing): exploitation may have started earlier.
Timeline
What happened to this CVE, newest first.
- 2026
- SSVC assessment updated
- Record published
- Fix documented
- Affected products added · oracle/jre, opensuse/opensuse, canonical/ubuntu linux
- CVSS changed · 9.8
- Source status changed · → Analyzed
- Added to CISA KEV (detected)
- Record created in this database
- 2022
- Added to CISA KEV catalog
- 2010
- CVE published
Source activity
Repeated readings are counted rather than listed.
- 2× References added · Oct 13, 2026 – Oct 13, 2026
- 1× Official description updated · Oct 13, 2026 – Oct 13, 2026
References
43 on the record
- secunia.com/advisories/39317
- secunia.com/advisories/40211
- secunia.com/advisories/39292
- www.vupen.com/english/advisories/2010/1454
- secunia.com/advisories/43308
- secunia.com/advisories/40545
- www.vupen.com/english/advisories/2010/1523
- www.vupen.com/english/advisories/2010/1191
- secunia.com/advisories/39659
- www.vupen.com/english/advisories/2010/1793
- secunia.com/advisories/39819
- www.oracle.com/technetwork/topics/security/cpuoct2010-175626.html
- www.oracle.com/technetwork/topics/security/javacpumar2010-083341.html
- www.cisa.gov/known-exploited-vulnerabilities-catalog
- www.redhat.com/support/errata/RHSA-2010-0489.html
- www.redhat.com/support/errata/RHSA-2010-0383.html
- www.securityfocus.com/bid/39065
- www.vmware.com/support/vsphere4/doc/vsp_vc41_u1_rel_notes.html
- www.vmware.com/security/advisories/VMSA-2011-0003.html
- www.redhat.com/support/errata/RHSA-2010-0337.html
- ubuntu.com/usn/usn-923-1
- nvd.nist.gov/vuln/detail/CVE-2010-0840
- www.redhat.com/support/errata/RHSA-2010-0471.html
- marc.info/
- lists.apple.com/archives/security-announce/2010//May/msg00001.html
- lists.apple.com/archives/security-announce/2010//May/msg00002.html
- lists.opensuse.org/opensuse-security-announce/2010-04/msg00001.html
- www.securityfocus.com/archive/1/510528/100/0/threaded
- www.securityfocus.com/archive/1/516397/100/0/threaded
- support.apple.com/kb/HT4171
- www.redhat.com/support/errata/RHSA-2010-0339.html
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13971
- lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html
- www.mandriva.com/security/advisories
- support.apple.com/kb/HT4170
- itrc.hp.com/service/cki/docDisplay.do
- www.redhat.com/support/errata/RHSA-2010-0338.html
- marc.info/
- lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.html
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9974
- github.com/advisories/GHSA-8rrv-3xx7-wmfc
- www.zerodayinitiative.com/advisories/ZDI-10-056
- www.vupen.com/english/advisories/2010/1107
Elsewhere on this site
Related CVEs (same products)
- High CVE-2026-62574 Improper Access Control in Oracle Jre Jul 21, 2026
- Medium CVE-2026-60526 Improper Input Validation in Oracle Jdk Jul 21, 2026
- Low CVE-2026-60166 Vulnerability in Oracle Java SE (component: JavaFX). The supported version that is… Jul 21, 2026
- Low CVE-2026-60164 Vulnerability in Oracle Java SE (component: JavaFX). The supported version that is… Jul 21, 2026
- Medium CVE-2026-60147 Improper Access Control in Oracle Jre Jul 21, 2026
- High CVE-2026-47063 Improper Access Control in Oracle Jre Jul 21, 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 CWE classification.
- 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-2010-0840 is "Oracle JRE Unspecified Vulnerability", rated Critical. It affects Ubuntu Linux (Canonical); versions are in the scope table. It is in CISA KEV: there is evidence of real-world exploitation. CVSS 9.8 describes technical severity. EPSS 96.32% 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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