CVE-2026-110839CWE-787

CVE-2026-110839

High · published October 15, 2026

CVSS v3.1
7.1
EPSS
0%
Percentile
12.0
In the wild
Unconfirmed
What it is

FreeRDP 3.3.0 before 3.32.0, when built with WINPR_UTILS_IMAGE_JPEG=ON, has a heap-based out-of-bounds write in winpr_convert_from_jpeg because grayscale JPEG buffers are sized from one input component rather than three BGR output components. A malicious RDP server can offer a grayscale JPEG via clipboard redirection, corrupting client memory and crashing it when the item is pasted as CF_DIB bitmap data.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
CVSS v4.0
7.1 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
EPSS
0.00221 · 12.0th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-10-15T03:17Z
Affected products (1)
ProductVersionsFixed in
freerdp/freerdp≥ 3.3.0, < 3.32.03.32.0
References (3)
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-99p4-8j24-wvj4 · [email protected]https://www.vulncheck.com/advisories/freerdp-3.3.0-before-3.32.0-heap-out-of-bounds-write-via-grayscale-jpeg-clipboard-data · [email protected]https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-99p4-8j24-wvj4 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 16 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 14 OCT 22:52Z
    FreeRDP 3.3.0 before 3.32.0 Heap Out-of-Bounds Write via Grayscale JPEG Clipboard Data
    cvelistv5
  • 14 OCT 22:52Z
    FreeRDP 3.3.0 before 3.32.0 Heap Out-of-Bounds Write via Grayscale JPEG Clipboard Data
    cvelistv5