CVE-2026-70109: Microsoft PostScript Printer Driver heap buffer overflow

CVE-2026-70109 · Severity: high · CVSS 7.8 · Published 2026-10-13

A vulnerability in Microsoft's PostScript Printer Driver allows a local attacker to overflow a heap buffer and gain elevated privileges on a Windows system. An attacker with local access could exploit this to run arbitrary code with system-level permissions, potentially compromising sensitive data or system integrity.

Technologies: Microsoft PostScript Printer Driver. Vendors: Microsoft.

Quick answers

Is CVE-2026-70109 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-70109 being exploited in the wild.
How severe is CVE-2026-70109?
High severity, with a CVSS score of 7.8, published 13 October 2026.
Which products and versions are affected?
Microsoft PostScript Printer Driver.
Is there a fix for CVE-2026-70109?
No fixed version is recorded yet. Check the vendor's advisory in the references below. 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-2026-70109 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2026-70109?
Check whether you run Microsoft PostScript Printer Driver. 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.

Technical details

A heap-based buffer overflow exists in the Microsoft PostScript Printer Driver, allowing local attackers to overflow a heap buffer and achieve privilege escalation. The vulnerability requires local access and no user interaction, giving an attacker with limited privileges the ability to execute code in the driver's context with elevated rights.

Affected products

  • Microsoft PostScript Printer Driver

Timeline

  • 2026-10-13: disclosed

References

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