VulnSocial

CVE-2026-23530Disclosure(freerdp / freerdp)

LOWCVSS 9.8 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch freerdp freerdp systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD 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.

freerdp CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Exploit / PoC references
Other references
Weakness type (CWE)
CWE-122

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

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
freerdp
Products
freerdp

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-07-14: 1Patch / Workaround · 2026-07-14: 1Technical Details · 2026-07-14: 107-14
Signal classification1 categories
Disclosure
1100.0%
Full discourse1 post
  • DFIR Lab@DFIR_Lab
    Disclosure

    FreeRDP is a free implementation of the Remote Desktop Protocol. From 3.21.0 before 3.28.0, FreeRDP clients using the GFX pipeline contain an incomplete fix for CVE-2026-23530 in planar_decompress_plane_rle_only in libfreerdp/codec/planar.c, allowing a malicious RDP server to send a truncated RDPGFX_CMDID_WIRETOSURFACE_1 planar payload that reads one byte past the input buffer. This issue is fixed in version 3.28.0.

    Post summary

    The excerpt discloses a buffer over-read vulnerability (CVE-2026-23530) in FreeRDP's GFX pipeline, details the affected code and versions, and notes that it is fixed in 3.28.0.

    0000042
    72 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appfreerdpfreerdp---

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