VulnSocial

CVE-2026-67303Disclosure(freerdp / freerdp)

LOWCVSS 5.3 · MEDIUM

Signal is active with 2 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 before 3.29.0 contains a reachable assertion (WINPR_ASSERT(OutputBufferLength == BytesReturned)) in serial_process_irp_device_control() in channels/serial/client/serial_main.c. When serial device redirection is enabled and a server-controlled IRP_MJ_DEVICE_CONTROL request specifies an unsupported IOCTL with a non-zero OutputBufferLength, CommDeviceIoControl() can fail with BytesReturned = 0, causing the mismatch to trigger the assertion and abort the client process (denial of service).

freerdp CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Patch / fix
Vendor / third-party advisories
Weakness type (CWE)
CWE-617

Priority

LOW

Exploitation

NONE

PoC

NONE

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

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • 2 total mentions across 1 day

Affected systems

Vendors
freerdp
Products
freerdp

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-08-01: 2Technical Details · 2026-08-01: 208-01
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-67303 FreeRDP before 3.29.0 contains a reachable assertion (WINPR_ASSERT(OutputBufferLength == BytesReturned)) in serial_process_irp_device_control() in channels/serial/cli… https://www.cve.org/CVERecord?id=CVE-2026-67303 ----- Traducción: CVE-2026-67303 Fre… http://infoflow.cloud`

    Post summary

    The tweet announces CVE-2026-67303 for FreeRDP, detailing a reachable assertion in serial controller code, but provides no PoC, exploit, or patch information.

    0000035
    96 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-67303 FreeRDP before 3.29.0 contains a reachable assertion (WINPR_ASSERT(OutputBufferLength == BytesReturned)) in serial_process_irp_device_control() in channels/serial/cli… https://www.cve.org/CVERecord?id=CVE-2026-67303

    Post summary

    The post identifies a reachable assertion vulnerability (CVE‑2026‑67303) in FreeRDP prior to version 3.29.0, detailing the affected function, but it provides no PoC, exploit, or patch information.

    000001.3K
    57.9K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appfreerdpfreerdp---

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