CVE-2012-2967: Caucho Quercus, as distributed in Resin before 4.0.29, does not properly implement the == (equals sign equals

Q: How do I fix CVE-2012-2967?

resin: upgrade to newer than 4.0.28. Exact commands for each OS are on this page.

Q: Is CVE-2012-2967 being exploited?

CVE-2012-2967 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2012-2967 affect?

CVE-2012-2967 affects resin. Severity is high (CVSS 7.5). Caucho Quercus, as distributed in Resin before 4.0.29, does not properly implement the == (equals sign equals sign) operator for comparisons, which has unspecified impact and context-dependent attack vectors.

This month

HIGH 7.5UPGRADE

CVE-2012-2967 is a high-severity flaw (CVSS 7.5) affecting resin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Caucho Quercus, as distributed in Resin before 4.0.29, does not properly implement the == (equals sign equals sign) operator for comparisons, which has unspecified impact and context-dependent attack vectors.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.6% (top 24%)
CISA exploited list	No
Published	2012-08-12
Last modified	2026-06-16

Publisher (CNA): CERT/CC · Vendor: caucho

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2012-08-12 16:55 UTCPublished CVE record published
2026-06-16 23:42 UTCUpdated Record last modified

caucho resin UPGRADE

Affected: <= 4.0.28 · 2.0.0 · 2.0.1 · 2.0.2 · 2.0.3 · 2.0.4 · 2.0.5 · 2.1.0

Fixed in: newer than 4.0.28

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy resin || rpm -q resin || resin --version

2. UPGRADE to newer than 4.0.28 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade resin

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade resin

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2012-2967?

resin: upgrade to newer than 4.0.28. Exact commands for each OS are on this page.

Is CVE-2012-2967 being exploited?

CVE-2012-2967 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2012-2967 affect?

CVE-2012-2967 affects resin. Severity is high (CVSS 7.5). Caucho Quercus, as distributed in Resin before 4.0.29, does not properly implement the == (equals sign equals sign) operator for comparisons, which has unspecified impact and context-dependent attack vectors.

How urgent is CVE-2012-2967?

Priority 45/100. High severity

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References

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