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ExploitedIn CISA KEVFix available

CVE-2013-2423

Exploitation confirmed. First attested on 2022-05-25 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2013-04-17
  • WeaknessCWE-284

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 17 and earlier, and OpenJDK 7, allows remote attackers to affect integrity via unknown vectors related to HotSpot. NOTE: the previous information is from the April 2013 CPU. Oracle has not commented on claims from the original researcher that this vulnerability allows remote attackers to bypass permission checks by the MethodHandles method and modify arbitrary public final fields using reflection and type confusion, as demonstrated using integer and double fields to disable the security manager.

Timeline

dates in UTC
  1. 2013-04-1718:55CVE publishedNVD
  2. 2022-05-25Added to the CISA KEV catalogCISA KEV
  3. 2022-05-25Listed as exploited by GCVEGCVE
  4. 2022-05-25Exploitation first reportedCISA KEV
  5. 2025-02-1019:49SSVC exploitation set to activeCISA-ADP
  6. 2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2013-2423?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2013-2423?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Canonical ubuntu linux
BranchAffectedFixed in
12.10= 12.10no fix published
Java (Oracle JDK)
BranchAffectedFixed in
1.7= 1.7.0no fix published
Opensuse
BranchAffectedFixed in
12.3= 12.3no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. CISA’s required action: Apply updates per vendor instructions.due 2022-06-15

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

CISA Known Exploited Vulnerability

Date Added
2022-05-25
Patch Due Date
2022-06-15
Ransomware Use
Unknown
Required Action
Apply updates per vendor instructions.

Sources

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Published
2013-04-17
Last Modified
2026-06-16
NVD status
Analyzed

Frequently asked questions

What is CVE-2013-2423?

Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 17 and earlier, and OpenJDK 7, allows remote attackers to affect integrity via unknown vectors related to HotSpot. NOTE: the previous information is from the April 2013 CPU. Oracle has not commented on claims from the original researcher that this vulnerability allows remote attackers to bypass permission checks by the MethodHandles method and modify arbitrary public final fields using reflection and type confusion, as demonstrated using integer and double fields to disable the security manager.

Is CVE-2013-2423 actively exploited?

Yes. CVE-2013-2423 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-06-15.

What is the CVSS score for CVE-2013-2423?

CVE-2013-2423 has a CVSS v3 base score of 3.7 (LOW severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N.

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