CVE-2004-0999: zgv 5.5.3 allows remote attackers to cause a denial of service (application crash via segmentation fault) via

Routine

LOW 2.6DOWNGRADE

CVE-2004-0999 is a low-severity flaw (CVSS 2.6) affecting zgv image viewer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

zgv 5.5.3 allows remote attackers to cause a denial of service (application crash via segmentation fault) via crafted multiple-image (animated) GIF images.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	2.6 (Low)
EPSS exploit chance	1.4% (top 27%)
CISA exploited list	No
Published	2004-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: zgv

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

Am I affected?

Timeline

2004-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:06 UTCUpdated Record last modified

zgv zgv image viewer DOWNGRADE

Affected: 5.5.3 · 5.6 · 5.7 · 5.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.5.3

1. Check installed version

apt-cache policy zgv-image-viewer || rpm -q zgv-image-viewer || zgv-image-viewer --version

2. No fixed release: DOWNGRADE to a release before 5.5.3 (Debian / Ubuntu)

apt-cache madison zgv-image-viewer sudo apt install zgv-image-viewer=<VERSION_BEFORE_5.5.3> sudo apt-mark hold zgv-image-viewer

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

dnf --showduplicates list zgv-image-viewer sudo dnf downgrade zgv-image-viewer-<VERSION_BEFORE_5.5.3> sudo dnf versionlock add zgv-image-viewer

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.

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-2004-0999?

zgv image viewer: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2004-0999 being exploited?

CVE-2004-0999 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-2004-0999 affect?

CVE-2004-0999 affects zgv image viewer. Severity is low (CVSS 2.6). zgv 5.5.3 allows remote attackers to cause a denial of service (application crash via segmentation fault) via crafted multiple-image (animated) GIF images.

How urgent is CVE-2004-0999?

Priority 27/100. No elevated risk signals yet.

Related CVEs

CVE-2004-1095 HIGH 10.0 DOWNGRADE DOWNGRADE Multiple integer overflows in (1) readbmp.c, (2) readgif.c, (3) readgif.c, (4) readmrf.c, (5) readpcx.c, (6) r
CVE-2004-0994 HIGH 10.0 DOWNGRADE DOWNGRADE Multiple integer overflows in xzgv 0.8 and earlier allow remote attackers to execute arbitrary code via images

References

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