Vulnerability · Published Nov 3, 2026 · Assigned by VulnCheck
CVE-2026-121386FreeRDP before 3.32.2 Denial of Service via WinPR PNG/JPEG Image Readers
High 7.5
In plain English
A high-severity security flaw in FreeRDP from FreeRDP. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.3%top 81.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
FreeRDP before 3.32.2 contains a denial of service vulnerability in WinPR's winpr_read_png_from_buffer() and winpr_convert_from_jpeg(), which lack libpng/libjpeg error handling. A malicious RDP server or MITM can offer a malformed PNG or truncated JPEG clipboard payload, causing the client to abort or exit.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:10 | freerdp | 2:3.32.2-1.el10_2 | ALSA-2026:94514 |
| AlmaLinux:10 | freerdp-devel | 2:3.32.2-1.el10_2 | ALSA-2026:94514 |
| AlmaLinux:10 | freerdp-libs | 2:3.32.2-1.el10_2 | ALSA-2026:94514 |
| AlmaLinux:10 | freerdp-server | 2:3.32.2-1.el10_2 | ALSA-2026:94514 |
| AlmaLinux:10 | libwinpr | 2:3.32.2-1.el10_2 | ALSA-2026:94514 |
| AlmaLinux:10 | libwinpr-devel | 2:3.32.2-1.el10_2 | ALSA-2026:94514 |
| Debian:12 | freerdp2 | no fix listed | DEBIAN-CVE-2026-121386 |
| Debian:13 | freerdp3 | no fix listed | DEBIAN-CVE-2026-121386 |
| Debian:14 | freerdp3 | 3.32.2+dfsg-1 | DEBIAN-CVE-2026-121386 |
| Ubuntu:22.04:LTS | freerdp2 | no fix listed | UBUNTU-CVE-2026-121386 |
| Ubuntu:24.04:LTS | freerdp3 | no fix listed | UBUNTU-CVE-2026-121386 |
| Ubuntu:26.04:LTS | freerdp3 | no fix listed | UBUNTU-CVE-2026-121386 |
| Ubuntu:26.10 | freerdp3 | no fix listed | UBUNTU-CVE-2026-121386 |
Affected products (as reported)
Weakness: CWE-248 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- GitHub Security Advisory (GHSA-799q-hjgw-g55g) vendor-advisory
- VulnCheck Advisory: FreeRDP before 3.32.2 Denial of Service via WinPR PNG/JPEG Image Readers third-party-advisory