VulnerabilityModified
CVE-2026-33986
FreeRDP is a free implementation of the Remote Desktop Protocol.
HIGH 7.5EPSS 0.27%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.27%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in yuv_ensure_buffer() in libfreerdp/codec/h264.c, h264->width and h264->height are updated before the reallocation loop. If any winpr_aligned_recalloc() call fails, the function returns FALSE but width/height are already inflated. This issue has been patched in version 3.24.2.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.27% probability · 18th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-122, CWE-131
- Affected
- freerdp/freerdp
- Source
- security-advisories@github.com
References
- https://github.com/FreeRDP/FreeRDP/commit/f6e43e208958140074ae9bb93cd0c9045a371c77Patch
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h6qw-wxvm-hf97Patch, Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-33986
- https://bugzilla.redhat.com/show_bug.cgi?id=2453221
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33986.json
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.