CVE-2006-3334: Buffer overflow in the png_decompress_chunk function in pngrutil.c in libpng before 1.2.12 allows context-depe

Q: How do I fix CVE-2006-3334?

libpng: upgrade to newer than 1.2.11. Exact commands for each OS are on this page.

Q: Is CVE-2006-3334 being exploited?

CVE-2006-3334 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-2006-3334 affect?

CVE-2006-3334 affects libpng. Severity is high (CVSS 7.5). Buffer overflow in the png_decompress_chunk function in pngrutil.c in libpng before 1.2.12 allows context-dependent attackers to cause a denial of service and possibly execute arbitrary code via unspecified vectors related to "chunk error p

Q: How urgent is CVE-2006-3334?

Priority 49/100. High severity; EPSS top 9%: very likely to be exploited

This month

HIGH 7.5UPGRADE

CVE-2006-3334 is a high-severity flaw (CVSS 7.5) affecting libpng. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in the png_decompress_chunk function in pngrutil.c in libpng before 1.2.12 allows context-dependent attackers to cause a denial of service and possibly execute arbitrary code via unspecified vectors related to "chunk error processing," possibly involving the "chunk_name".

Why this priority

High severity
EPSS top 9%: very likely to be exploited

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	4.0% (top 9%)
CISA exploited list	No
Published	2006-06-30
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: greg roelofs

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

Am I affected?

Timeline

2006-06-30 23:05 UTCPublished CVE record published
2026-06-16 22:26 UTCUpdated Record last modified

greg roelofs libpng UPGRADE

Affected: <= 1.2.11 · 1.2.0 · 1.2.1 · 1.2.2 · 1.2.3 · 1.2.4 · 1.2.5 · 1.2.6

Fixed in: newer than 1.2.11

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 1.2.11 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade libpng

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-2006-3334?

libpng: upgrade to newer than 1.2.11. Exact commands for each OS are on this page.

Is CVE-2006-3334 being exploited?

CVE-2006-3334 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-2006-3334 affect?

CVE-2006-3334 affects libpng. Severity is high (CVSS 7.5). Buffer overflow in the png_decompress_chunk function in pngrutil.c in libpng before 1.2.12 allows context-dependent attackers to cause a denial of service and possibly execute arbitrary code via unspecified vectors related to "chunk error p

How urgent is CVE-2006-3334?

Priority 49/100. High severity; EPSS top 9%: very likely to be exploited

Software pages

libpng vulnerabilities

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References

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