Dashboard / CVE-2026-121393

CVE-2026-121393

HIGH
MEDIUM Priority: 0.03 BB Relevance: 64/100
Published: 2026-11-03 Modified: 2026-11-03 First seen: 2026-11-03 Status: active

Attack Surface

Network Low Complexity No Auth

CVSS Vector Breakdown

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

Description

FreeRDP from 3.0.0 before 3.32.2 contains a denial of service vulnerability that allows malicious RDP servers to abort clients built with verbose WinPR assertions by sending crafted RemoteFX region rectangles. Attackers can supply a rectangle with x set to 65535 alongside a SurfaceBits destination left of 1, triggering a 16-bit coordinate assertion in rfx_process_message that terminates the client process.

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
FreeRDP FreeRDP 3.0.0 < 3.32.2
FreeRDP FreeRDP 3.0.0 < 3.32.2
freerdp freerdp 3.0.0 – 3.32.2

References & Advisories (2)

Bug Bounty Relevance

64 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

7.1 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/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

0.36%
Raw Score 0.003580
Percentile 30.0%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00358
2026-11-13
0.00358
2026-11-12
0.00358
2026-11-10
0.00358
2026-11-09
0.00358
2026-11-08
0.00358
2026-11-07
0.00358
2026-11-06
0.00358
2026-11-05
0.00358
2026-11-04
0.00358

Intelligence Sources

mitre ref →
nvd ref →

External Links