High [CVE-2026-114045] heap buffer overflow in server rdpsnd via crafted audio formats
This high-severity Red Hat Linux advisory covers CVE-2026-114045 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published
Android app · Google Play
Monitor future Red Hat Linux CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 34 official vendor sources and 160+ reviewed platform categories.
Summary
A flaw was found in FreeRDP. An integer wraparound in rdpsnd_server_select_format() DVI_ADPCM block-alignment arithmetic bypasses validation in the server-side rdpsnd channel.
A malicious RDP client can send crafted SNDC_FORMATS PDUs, causing an unbounded heap write during server audio playback that may enable code execution. This issue affects FreeRDP before 3.32.1.
This issue is rated Important because an authenticated RDP client can trigger a heap-based buffer overflow in the FreeRDP server audio (rdpsnd) channel without further user interaction (PR:L, UI:N), with High impact on confidentiality, integrity, and availability.
The vulnerable code is in the server-side rdpsnd path shipped when FreeRDP server components (for example freerdp-server / freerdp-shadow-cli) are built and used. Platform hardening such as ASLR, NX, and FORTIFY_SOURCE may make reliable exploitation more difficult but does not remove the underlying memory-corruption risk.
Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-122.
Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: freerdp.
- < 3.32.1
Official advisory · high-confidence parse· fetched 37 minutes ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 37 minutes ago·verify at source
Mitigation checklist
- If FreeRDP server or shadow components are unused, remove or disable them. Restrict RDP server access to trusted authenticated clients only ([CME-202](https://cmetaxonomy.org/entries/CME-202.html), [CME-203](https://cmetaxonomy.org/entries/CME-203.html)). Disable server-side audio redirection / rdpsnd when audio playback to clients is not required. Upgrade FreeRDP to 3.32.1 or later when updates are available.
Official advisory · high-confidence parse· fetched 37 minutes ago·verify at source
Discussion(0)
No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.
Sign in to join the discussion.