Heap Out-of-Bounds Read in FreeRDP Affects Server Communication
CVE-2026-67290

8.7HIGH

Key Information:

Vendor

Freerdp

Status
Freerdp
Vendor
CVE Published:
1 August 2026

What is CVE-2026-67290?

FreeRDP versions prior to 3.29.0 are susceptible to a heap out-of-bounds read vulnerability that occurs within the TSMF FFmpeg decoder. This issue arises when the software processes AVC1 MPEG2VIDEOINFO media types with inadequate ExtraData. By sending specially crafted media format data from a server, malicious actors can trigger a crash. This flaw allows for the reading of fixed offsets without proper validation of the source buffer's length, potentially compromising system stability.

Affected Version(s)

FreeRDP 0 < 3.29.0

FreeRDP 3.29.0

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GH...
vendor-advisory
https://github.com/FreeRDP/FreeRDP/commit/8d3b86022f0d71a...
patch
https://www.vulncheck.com/advisories/freerdp-before-heap-...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

1121984919
.