CVE-2026-85458 Divide-by-zero in Xpdf 4.06 due to zero-height Type 3 glyph
An attacker can cause a denial of service in Xpdf by providing a PDF with a zero-height Type 3 glyph, triggering a divide-by-zero error.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-85458?
CVE-2026-85458 is a low-severity denial of service vulnerability in Xpdf, published on 3 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Divide-by-zero in Xpdf 4.06 (and earlier), when a glyph in a Type 3 font has a zero height.
Weakness: CWE-369
Which versions are affected by CVE-2026-85458?
How do I fix CVE-2026-85458?
No fix has been published for CVE-2026-85458 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-85458 being exploited?
There is no known exploitation of CVE-2026-85458 in the wild and no public exploit code.
Sources
Also known as GHSA-8rpr-r8gp-748h, UBUNTU-CVE-2026-85458.