Dashboard / CVE-2026-91947

CVE-2026-91947

HIGH
MEDIUM Priority: 0.03 BB Relevance: 55/100
Published: 2026-09-15 Modified: 2026-11-03 First seen: 2026-11-03 Status: active

Attack Surface

Network No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: Low
UI: None
S: X
AT: Present
VC: High
VI: High
VA: High

Description

FreeRDP server versions before 3.31.0 contain a use-after-free vulnerability in the DRDYNVC parser that dereferences a channel pointer after releasing the synchronization lock. Authenticated clients can race AUDIN channel closure messages against DRDYNVC data parsing to trigger heap-use-after-free when accessing freed channel objects.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
freerdp freerdp < 3.31.0

References & Advisories (2)

Bug Bounty Relevance

55 / 100
✓ Network accessible
✓ No user interaction

CVSS Score

7.7 / 10.0 v4.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.37%
Raw Score 0.003740
Percentile 31.9%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00374
2026-11-13
0.00374
2026-11-12
0.00374
2026-11-10
0.00374
2026-11-09
0.00374
2026-11-08
0.00374
2026-11-07
0.00374
2026-11-06
0.00374
2026-11-05
0.00374
2026-11-04
0.00374
2026-11-03
0.00308

Intelligence Sources

nvd ref →

External Links