Fiche vulnérabilité
CVE-2026-23530 : faille critique freerdp freerdp (CVSS 9.8)
Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0,`freerdp_bitmap_decompress_planar` does not validate `nSrcWidth`/`nSrcHeight` against `planar->maxWidth`/`maxHeight` before RLE decode. 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.
En bref
- Sévérité
- Critique (CVSS 9.8)
- Vecteur CVSS
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Exploitation active
- Non signalée par la CISA
- Publication
- 19 janv. 2026
- Dernière mise à jour
- 15 juil. 2026
Produits concernés
- freerdp freerdp
Références
- Fiche CVE-2026-23530 sur le NVD (NIST)
- github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbce…
- github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbce…
- github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbce…
- github.com/FreeRDP/FreeRDP/releases/tag/3.21.0
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA…
- access.redhat.com/errata/RHSA-2026:2048
- access.redhat.com/errata/RHSA-2026:2081
- access.redhat.com/errata/RHSA-2026:2222
- access.redhat.com/errata/RHSA-2026:2714
- access.redhat.com/errata/RHSA-2026:2736
- access.redhat.com/errata/RHSA-2026:2770
- access.redhat.com/errata/RHSA-2026:2824
- access.redhat.com/errata/RHSA-2026:2952
- access.redhat.com/errata/RHSA-2026:3036
- access.redhat.com/errata/RHSA-2026:3037