CVE-2026-111881
FreeRDP 3.14.1 before 3.32.0 Integer Underflow in BMP Writer via Clipboard
- State
- Published
- Severity
- 7.2 High
- Published
- Oct 17, 2026
- Updated
- Oct 19, 2026
- Reserved
- Oct 17, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.2 High | 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 | VulnCheck |
| 3.1 | 7.6 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H | VulnCheck |
Weaknesses
- CWE-191 Integer Underflow (Wrap or Wraparound)
Affected Products
| Product | Versions |
|---|---|
FreeRDPFreeRDP |
|
References
- GitHub Security Advisory (GHSA-27m7-gwhh-6hhf)vendor-advisory
- VulnCheck Advisory: FreeRDP 3.14.1 before 3.32.0 Integer Underflow in BMP Writer via Clipboardthird-party-advisory
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