CVE-2024-7866: In Xpdf 4.05 (and earlier), a PDF object loop in a pattern resource leads to infinite recursion and a stack ov

Q: How do I fix CVE-2024-7866?

xpdf: upgrade to newer than 4.05. Exact commands for each OS are on this page.

Q: Is CVE-2024-7866 being exploited?

CVE-2024-7866 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-2024-7866 affect?

CVE-2024-7866 affects xpdf. Severity is medium (CVSS 5.5). In Xpdf 4.05 (and earlier), a PDF object loop in a pattern resource leads to infinite recursion and a stack overflow.

Q: How urgent is CVE-2024-7866?

Priority 22/100. No elevated risk signals yet.

Routine

MEDIUM 5.5UPGRADE

CVE-2024-7866 is a medium-severity flaw (CVSS 5.5) affecting xpdf. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Xpdf 4.05 (and earlier), a PDF object loop in a pattern resource leads to infinite recursion and a stack overflow.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 88%)
CISA exploited list	No
Weakness	CWE-674
Published	2024-08-15
Last modified	2026-06-17

Publisher (CNA): Glyph & Cog, LLC · Vendor: xpdfreader

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-08-15 20:15 UTCPublished CVE record published
2026-06-17 08:21 UTCUpdated Record last modified

xpdfreader xpdf UPGRADE

Affected: <= 4.05

Fixed in: newer than 4.05

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 4.05 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade xpdf

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-2024-7866?

xpdf: upgrade to newer than 4.05. Exact commands for each OS are on this page.

Is CVE-2024-7866 being exploited?

CVE-2024-7866 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-2024-7866 affect?

CVE-2024-7866 affects xpdf. Severity is medium (CVSS 5.5). In Xpdf 4.05 (and earlier), a PDF object loop in a pattern resource leads to infinite recursion and a stack overflow.

How urgent is CVE-2024-7866?

Priority 22/100. No elevated risk signals yet.

Related CVEs

CVE-2024-7868 HIGH 8.2 UPGRADE In Xpdf 4.05 (and earlier), invalid header info in a DCT (JPEG) stream can lead to an uninitialized variable i
CVE-2024-7867 MEDIUM 6.2 UPGRADE In Xpdf 4.05 (and earlier), very large coordinates in a page box can cause an integer overflow and divide-by-z
CVE-2024-4568 LOW 2.9 UPGRADE In Xpdf 4.05 (and earlier), a PDF object loop in the PDF resources leads to infinite recursion and a stack ove
CVE-2024-4141 LOW 2.9 UPGRADE Out-of-bounds array write in Xpdf 4.05 and earlier, triggered by an invalid character code in a Type 1 font
CVE-2024-3900 LOW 2.9 UPGRADE Out-of-bounds array write in Xpdf 4.05 and earlier, triggered by long Unicode sequence in ActualText.

References

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