CVE-2006-2906: The LZW decoding in the gdImageCreateFromGifPtr function in the Thomas Boutell graphics draw (GD) library (aka

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MEDIUM 5.4DOWNGRADE

CVE-2006-2906 is a medium-severity flaw (CVSS 5.4) affecting graphics draw library. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The LZW decoding in the gdImageCreateFromGifPtr function in the Thomas Boutell graphics draw (GD) library (aka libgd) 2.0.33 allows remote attackers to cause a denial of service (CPU consumption) via malformed GIF data that causes an infinite loop.

Why this priority

EPSS top 4%: very likely to be exploited
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.4 (Medium)
EPSS exploit chance	10.4% (top 4%)
CISA exploited list	No
Published	2006-06-08
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: thomas boutell

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

Am I affected?

Timeline

2006-06-08 16:06 UTCPublished CVE record published
2026-06-16 22:26 UTCUpdated Record last modified

thomas boutell graphics draw library DOWNGRADE

Affected: 2.0.33

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0.33

1. Check installed version

apt-cache policy graphics-draw-library || rpm -q graphics-draw-library || graphics-draw-library --version

2. No fixed release: DOWNGRADE to a release before 2.0.33 (Debian / Ubuntu)

apt-cache madison graphics-draw-library sudo apt install graphics-draw-library=<VERSION_BEFORE_2.0.33> sudo apt-mark hold graphics-draw-library

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list graphics-draw-library sudo dnf downgrade graphics-draw-library-<VERSION_BEFORE_2.0.33> sudo dnf versionlock add graphics-draw-library

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: GD Graphics Library 2.0.33 - Remote Denial of Service

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-2006-2906?

graphics draw library: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2006-2906 being exploited?

CVE-2006-2906 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-2006-2906 affect?

CVE-2006-2906 affects graphics draw library. Severity is medium (CVSS 5.4). The LZW decoding in the gdImageCreateFromGifPtr function in the Thomas Boutell graphics draw (GD) library (aka libgd) 2.0.33 allows remote attackers to cause a denial of service (CPU consumption) via malformed GIF data that causes an infini

How urgent is CVE-2006-2906?

Priority 48/100. EPSS top 4%: very likely to be exploited; Public exploit reference

References

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