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Java CVE-2013-0431

LOW
Protection Mechanism Failure (CWE-693)
2013-01-31 secalert_us@oracle.com
Authentication Bypass Java Oracle Jre Openjdk
3.7
CVSS 3.1 · Vendor: oracle
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Vulnerability Assessment

Weakness
CWE
CWE-693
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V15 - Secure Coding and Architecture Protection mechanism completeness
Impact

CVSS score of 5.3 (MEDIUM). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. CISA has confirmed active exploitation in the wild. Public proof-of-concept exploit code is available. EPSS exploitation probability: 91.59%.
Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.
Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).
Exploited in the wild (CISA KEV) No patch listed yet 91.6% exploitation probability (EPSS)

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AnalysisAI

Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 through Update 11, and OpenJDK 7, allows user-assisted remote attackers to bypass the Java security. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Actively exploited in the wild (cisa kev) and public exploit code available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Technical ContextAI · show details

This vulnerability is classified under CWE-693. Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 through Update 11, and OpenJDK 7, allows user-assisted remote attackers to bypass the Java security sandbox via unspecified vectors related to JMX, aka "Issue 52," a different vulnerability than CVE-2013-1490. Affected products include: Oracle Jre, Oracle Openjdk.

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Severity by source

Vendor (oracle) PRIMARY 3.7 LOW
AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Primary rating from Vendor (oracle) · only source for this CVE.

CVSS VectorVendor: oracle

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

4
Severity Changed
Oct 01, 2026 - 20:22 NVD
MEDIUM LOW
CVSS changed
Oct 01, 2026 - 20:22 NVD
5.3 (MEDIUM) 3.7 (LOW)
Added to CISA KEV
Apr 21, 2026 - 15:31 CISA
CVE Published
Jan 31, 2013 - 14:55 cve.org
MEDIUM 5.3

DescriptionCVE.org

Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 through Update 11, and OpenJDK 7, allows user-assisted remote attackers to bypass the Java security sandbox via unspecified vectors related to JMX, aka "Issue 52," a different vulnerability than CVE-2013-1490.

Threat Intelligence Overview

Threat Score
6.5/10
Composite threat intelligence
EPSS Score
91.6%
Top 0% exploitable
Exploit
POC
Public exploit code exists
Data Quality
7 sources
Confidence: High
NVD CVE.org CISA KEV EPSS POC (1) Exploit-DB VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity LOW
CISA KEV Yes
Public POC Yes
EPSS 91.6%
Patch available No
Active threat Yes
Deciding rule
LOW severity (CVSS 0.1-3.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Immediate
Exploitation· derived
Active
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
High

Priority Score

195
Low Medium High Critical
KEV: +50
EPSS: +92
CVSS: +18
PoC: +20
Weaponized: +15
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)CVE.org

cpe:2.3:a:oracle:jre:1.7.0:-:*:*:*:*:*:*
cpe:2.3:a:oracle:jre:1.7.0:update1:*:*:*:*:*:*
cpe:2.3:a:oracle:jre:1.7.0:update10:*:*:*:*:*:*
cpe:2.3:a:oracle:jre:1.7.0:update11:*:*:*:*:*:*
cpe:2.3:a:oracle:jre:1.7.0:update2:*:*:*:*:*:*
cpe:2.3:a:oracle:jre:1.7.0:update3:*:*:*:*:*:*
cpe:2.3:a:oracle:jre:1.7.0:update4:*:*:*:*:*:*
cpe:2.3:a:oracle:jre:1.7.0:update5:*:*:*:*:*:*
cpe:2.3:a:oracle:jre:1.7.0:update6:*:*:*:*:*:*
cpe:2.3:a:oracle:jre:1.7.0:update7:*:*:*:*:*:*
cpe:2.3:a:oracle:jre:1.7.0:update9:*:*:*:*:*:*
cpe:2.3:a:oracle:openjdk:7:-:*:*:*:*:*:*

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References

Advisories & patches
ADVISORY http://www.oracle.com/technetwork/topics/security/javacpufeb2013-1841061.html ADVISORY https://vuldb.com/vuln/7554 REF http://arstechnica.com/security/2013/01/critical-java-vulnerabilies-confirmed-in-latest-version/ REF http://blogs.computerworld.com/malware-and-vulnerabilities/21693/yet-another-java-security-flaw-discovered-number-53 REF http://lists.opensuse.org/opensuse-security-announce/2013-03/msg00001.html REF http://marc.info/?l=bugtraq&m=136439120408139&w=2 REF http://marc.info/?l=bugtraq&m=136733161405818&w=2 REF http://rhn.redhat.com/errata/RHSA-2013-0237.html REF http://rhn.redhat.com/errata/RHSA-2013-0247.html REF http://seclists.org/fulldisclosure/2013/Jan/142 REF http://seclists.org/fulldisclosure/2013/Jan/195 REF http://security.gentoo.org/glsa/glsa-201406-32.xml REF http://www.informationweek.com/security/application-security/java-hacker-uncovers-two-flaws-in-latest/240146717 REF http://www.kb.cert.org/vuls/id/858729 REF http://www.mandriva.com/security/advisories?name=MDVSA-2013:095 REF http://www.securityfocus.com/archive/1/525387/30/0/threaded REF http://www.us-cert.gov/cas/techalerts/TA13-032A.html REF https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16579 REF https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19418 REF https://wiki.mageia.org/en/Support/Advisories/MGASA-2013-0056 REF https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-0431

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