Bug 2453222 (CVE-2026-33995)
| Summary: | CVE-2026-33995 FreeRDP: FreeRDP: Denial of Service via double-free vulnerability during NLA connection teardown | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | Keywords: | Security |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol. A remote attacker could exploit a double-free vulnerability in the Kerberos security context functions, specifically `kerberos_AcceptSecurityContext()` and `kerberos_InitializeSecurityContextA()`, within the WinPR library. This vulnerability is triggered during the Network Level Authentication (NLA) connection teardown process after a failed authentication attempt. Successful exploitation can lead to a client crash, resulting in a Denial of Service (DoS) for affected FreeRDP clients configured with Kerberos.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2453248, 2453250, 2453249 | ||
| Bug Blocks: | |||
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Description
OSIDB Bzimport
2026-03-30 22:02:02 UTC
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