# CVE-2026-110133: Ghostscript heap buffer overflow in TrueType font rendering

Source: https://junglewise.ai/threats/cve-2026-110133-a-flaw-was-found-in-ghostscript-when-processing-a-specially  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-30. Updated: 2026-10-30  
License: CC BY 4.0 with a link back

CVE-2026-110133 · Severity: medium · CVSS 5.8 · Published 2026-10-30

Ghostscript is a document processing tool used to handle PostScript and PDF files. A flaw in how it processes TrueType fonts can allow an attacker to trigger a memory corruption vulnerability by providing a malicious document or font file. An exploit could crash the application, cause a denial of service, or potentially execute arbitrary code on the victim's system.

## Quick answers

**Is CVE-2026-110133 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-110133 being exploited in the wild.

**How severe is CVE-2026-110133?** Medium severity, with a CVSS score of 5.8, published 30 October 2026.

**Which products and versions are affected?** Ghostscript.

**Is there a fix for CVE-2026-110133?** No fixed version is recorded yet. Avoid processing untrusted documents or standalone TrueType fonts with Ghostscript. If feasible, disable TrueType instruction execution within Ghostscript configurations, and consider running Ghostscript in a restrictive sandbox environment to reduce the blast radius of potential exploitation.</anigation>
<parameter name="timeline">[{"kind": "disclosed", "at": "2026-10-30"}] If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-110133 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-110133?** Check whether you run Ghostscript. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix


Avoid processing untrusted documents or standalone TrueType fonts with Ghostscript. If feasible, disable TrueType instruction execution within Ghostscript configurations, and consider running Ghostscript in a restrictive sandbox environment to reduce the blast radius of potential exploitation.</anigation>
<parameter name="timeline">[{"kind": "disclosed", "at": "2026-10-30"}]

## Technical details

An integer underflow in the TrueType outliner during font rendering bypasses buffer size checks, leading to a heap-based buffer overflow (CWE-122). The vulnerability is triggered when processing a specially crafted TrueType font or a document embedding one. A remote attacker can exploit this by enticing a victim or automated service to open malicious content, potentially achieving DoS or arbitrary code execution; Red Hat lists this as exploitable via local attack vector with high privileges required.

## Affected products

- Ghostscript

## References

- [https://access.redhat.com/downloads/content/package-browser/](https://access.redhat.com/downloads/content/package-browser/)
- [https://access.redhat.com/security/cve/CVE-2026-110133](https://access.redhat.com/security/cve/CVE-2026-110133)

## Related threats

- [Ghostscript -dSAFER sandbox bypass and arbitrary command execution](https://junglewise.ai/threats/cve-2026-101258-a-flaw-was-found-in-ghostscript-when-ghostscript-renders-a)