Bug 2567939 (CVE-2026-121956) - CVE-2026-121956 freerdp: freerdp: Denial of Service via crafted Kerberos authentication request
Summary: CVE-2026-121956 freerdp: freerdp: Denial of Service via crafted Kerberos auth...
Keywords:
Status: NEW
Alias: CVE-2026-121956
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2568268 2568288
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-05 22:38 UTC by OSIDB Bzimport
Modified: 2026-11-06 15:12 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
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Last Closed:
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Description OSIDB Bzimport 2026-11-05 22:38:00 UTC 
FreeRDP before 3.32.2 contains a double free in the WinPR Kerberos SSPI retrieveSomeTgt function, which installs the krb5 default realm into a target principal that has an empty realm without taking ownership of it. Unauthenticated remote clients can send a crafted NLA/CredSSP u2u TGT request whose server-name component contains '@' to corrupt the heap and crash the server process.
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