NULL Pointer Dereference The advisory has been revoked - it doesn't affect any version of package libwinpr (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about NULL Pointer Dereference vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-RHEL10-LIBWINPR-15252862
- published10 Feb 2026
- disclosed9 Feb 2026
Introduced: 9 Feb 2026
CVE-2026-23948 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libwinpr package and not the libwinpr package as distributed by RHEL.
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, a NULL pointer dereference vulnerability in rdp_write_logon_info_v2() allows a malicious RDP server to crash FreeRDP proxy by sending a specially crafted LogonInfoV2 PDU with cbDomain=0 or cbUserName=0. This vulnerability is fixed in 3.22.0.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2438207
- https://access.redhat.com/security/cve/CVE-2026-23948
- https://access.redhat.com/errata/RHSA-2026:6743
- https://access.redhat.com/errata/RHSA-2026:6799
- https://github.com/FreeRDP/FreeRDP/commit/4d44e3c097656a8b9ec696353647b0888ca45860
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-6f3c-qvqq-2px5