CVE-2026-111381: FreeRDP heap buffer overflow in persistent cache v2 parser

CVE-2026-111381 · Severity: high · CVSS 7.3 · Published 2026-10-16

FreeRDP is a remote desktop protocol client used to connect to Windows servers and desktops. A heap buffer overflow vulnerability in its persistent cache file parser allows a local attacker to corrupt memory and potentially execute arbitrary code by providing a malicious cache file, leading to application crashes or system compromise.

Technologies: FreeRDP Project FreeRDP. Vendors: FreeRDP Project.

Quick answers

Is CVE-2026-111381 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-111381 being exploited in the wild.
How severe is CVE-2026-111381?
High severity, with a CVSS score of 7.3, published 16 October 2026.
Which products and versions are affected?
FreeRDP Project FreeRDP before 3.32.0.
Is there a fix for CVE-2026-111381?
Yes: fixed in 3.32.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-111381 attacked?
It is attacked with local access, in a software library.
Am I affected by CVE-2026-111381?
Check whether you run FreeRDP Project FreeRDP at an affected version. 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

  • Fixed in: 3.32.0

Technical details

An integer wraparound in the bitmap size calculation within persistent_cache_read_entry_v2 causes mismatched buffer size accounting. When an attacker crafts a malicious persistent cache v2 file with oversized width and height values, the 64-bit multiplication overflows, producing a small falsified size value that bypasses validation checks. The code then reads a fixed 16 KiB block into a buffer while tracking an incorrect size, leading to heap corruption and potential code execution. Attack requires local file access and user interaction to load the malicious cache file.

Affected products

  • FreeRDP Project FreeRDP before 3.32.0

Timeline

  • 2026-10-01: disclosed
  • 2026-10-16: advisory

References

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