CVE-2026-111881CWE-191

CVE-2026-111881

High · published October 17, 2026

CVSS v3.1
7.6
EPSS
0%
Percentile
9.4
In the wild
Unconfirmed
What it is

FreeRDP from 3.14.1 before 3.32.0 contains an integer underflow in the WinPR BMP writer, where a mismatched stride calculation passes SIZE_MAX - 3 to Stream_Zero for sub-byte images. A malicious RDP clipboard peer can return a crafted 1-bpp BMP processed by clipboard_synthesize_image_format_to_bmp for CF_DIB/CF_DIBV5, crashing the client or causing an out-of-bounds write.

The record
Technical detail
CVSS v3.1
7.6 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
CVSS v4.0
7.2 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
EPSS
0.00201 · 9.4th percentile
Weakness
CWE-191 · Integer Underflow (Wrap or Wraparound)
Published
2026-10-17T23:16Z
References (3)
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-27m7-gwhh-6hhf · [email protected]https://www.vulncheck.com/advisories/freerdp-3.14.1-before-3.32.0-integer-underflow-in-bmp-writer-via-clipboard · [email protected]https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-27m7-gwhh-6hhf · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 19 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 17 OCT 18:46Z
    FreeRDP 3.14.1 before 3.32.0 Integer Underflow in BMP Writer via Clipboard
    cvelistv5
  • 17 OCT 18:46Z
    FreeRDP 3.14.1 before 3.32.0 Integer Underflow in BMP Writer via Clipboard
    cvelistv5