CVE-2026-23534
NixOS vulnerability analysis and mitigation

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, a client-side heap buffer overflow occurs in the ClearCodec bands decode path when crafted band coordinates allow writes past the end of the destination surface buffer. A malicious server can trigger a client‑side heap buffer overflow, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue.


SourceNVD

Related NixOS vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-21010HIGH7.8
  • NixOSNixOS
  • android
NoNoApr 13, 2026
CVE-2026-21012MEDIUM6.8
  • NixOSNixOS
  • android
NoNoApr 13, 2026
CVE-2026-21011MEDIUM5.4
  • NixOSNixOS
  • android
NoNoApr 13, 2026
CVE-2026-21008MEDIUM5.1
  • NixOSNixOS
  • android
NoNoApr 13, 2026
CVE-2026-21009MEDIUM4.1
  • NixOSNixOS
  • android
NoNoApr 13, 2026

Free Vulnerability Assessment

Benchmark your Cloud Security Posture

Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.

Request assessment

Get a personalized demo

Ready to see Wiz in action?

"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management