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CVE-2023-39975

Published: Aug 16, 2023Updated: Feb 25, 2026 Sources: CVE List NVDCWE-415
8.8HIGH
NVD MITRE
EPSS Score
1.2%
Top 34.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

kdc/do_tgs_req.c in MIT Kerberos 5 (aka krb5) 1.21 before 1.21.2 has a double free that is reachable if an authenticated user can trigger an authorization-data handling failure. Incorrect data is copied from one ticket to another.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-415

Affected Products

mit
oss-project·USaka mit krb5, mit kerberos
kerberos 5On-prem
Operating Systems
and 1 more affected products View all →

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://web.mit.edu/kerberos/www/advisories/
web.mit.edu
https://github.com/krb5/krb5/compare/krb5-1.21.1-final...krb5-1.21.2-final
github.com
https://github.com/krb5/krb5/commit/88a1701b423c13991a8064feeb26952d3641d840
github.com
and 3 more references View all →
News mentions
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