CVE-2026-55192(freerdp / freerdp)

LOWCVSS 8.2 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP H.264 decoder backends can return YUV planes sized from the bitstream without comparing the decoded width and height to the RDPGFX surface dimensions used to validate region rectangles. A malicious RDP server can provide an AVC420 or AVC444 bitstream whose decoded frame is smaller than the negotiated surface, causing yuv420_context_decode and the YUV-to-RGB conversion paths to read beyond the decoder-owned planes in libfreerdp/codec/h264.c and the selected H.264 backend. This can disclose client memory or crash the client. This issue is fixed in version 3.27.0.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-125

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • freerdp

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • 1 total mentions across 1 day

Affected systems

Vendors
Products
freerdp

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-11-08: 111-08
Full discourse1 post
  • DFIR Lab@DFIR_Lab

    🚨 HIGH: CVE-2026-55192 (CVSS 8.2) - FreeRDP H.264 decoder flaw allows malicious RDP servers to trigger memory disclosure or client crashes. Affects versions <3.27.0. Update immediately. #CVE #PatchNow #ThreatIntel https://t.co/ToKVk3B63s

    0000042
    163 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appfreerdpfreerdp---

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