CVE-2026-25941
CVE-2026-25941 is a medium-severity vulnerability in Freerdp with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.
Key facts
- Severity: Medium (CVSS 3.x base score 4.3)
- EPSS exploit prediction: 0% (20th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-8730
- Weakness: CWE-20
- Affected product: Freerdp
- Published:
- Last modified:
Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Versions on the 2.x branch prior to to 2.11.8 and on the 3.x branch prior to 3.23.0 have an out-of-bounds read vulnerability in the FreeRDP client's RDPGFX channel that allows a malicious RDP server to read uninitialized heap memory by sending a crafted WIRE_TO_SURFACE_2 PDU with a `bitmapDataLength` value larger than the actual data in the packet. This can lead to information disclosure or client crashes when a user connects to a malicious server. Versions 2.11.8 and 3.23.0 fix the issue.
Frequently asked questions
- What is CVE-2026-25941?
- FreeRDP is a free implementation of the Remote Desktop Protocol. Versions on the 2.x branch prior to to 2.11.8 and on the 3.x branch prior to 3.23.0 have an out-of-bounds read vulnerability in the FreeRDP client's RDPGFX channel that allows a malicious RDP server to read uninitialized heap memory by sending a crafted WIRE_TO_SURFACE_2 PDU with a `bitmapDataLength` value larger than the actual data in the packet. This can lead to information disclosure or client crashes when a user connects to a malicious server. Versions 2.11.8 and 3.23.0 fix the issue.
- How severe is CVE-2026-25941?
- CVE-2026-25941 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
- Is CVE-2026-25941 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-25941?
- CVE-2026-25941 affects Freerdp. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-25941?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-25941 have an EU (EUVD) identifier?
- Yes. CVE-2026-25941 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8730.
- When was CVE-2026-25941 published?
- CVE-2026-25941 was published on 2026-02-25 and last updated on 2026-06-17.
References
- https://github.com/FreeRDP/FreeRDP/commit/2e3b77e28ac6a398897d28ba464dcc5dfab9c9e2
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-3546-x645-5cf8
Affected products (1)
- cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*
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