High severity7.5NVD Advisory· Published Mar 30, 2026· Updated Jul 15, 2026
CVE-2026-33986
CVE-2026-33986
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.
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Affected products
6- osv-coords4 versionspkg:rpm/opensuse/freerdp&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/freerdp&distro=openSUSE%20Tumbleweedpkg:rpm/suse/freerdp&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/freerdp&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0
< 3.26.0-160000.1.1+ 3 more
- (no CPE)range: < 3.26.0-160000.1.1
- (no CPE)range: < 3.24.2-1.1
- (no CPE)range: < 3.26.0-160000.1.1
- (no CPE)range: < 3.26.0-160000.1.1
Patches
Vulnerability mechanics
References
5- github.com/FreeRDP/FreeRDP/commit/f6e43e208958140074ae9bb93cd0c9045a371c77nvdPatch
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h6qw-wxvm-hf97nvdPatchVendor Advisory
- access.redhat.com/security/cve/CVE-2026-33986nvd
- bugzilla.redhat.com/show_bug.cginvd
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33986.jsonnvd
News mentions
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