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Fencer Vulns
critical 10.0

CVE-2004-0523 in the critical feed json

Multiple buffer overflows in krb5_aname_to_localname for MIT Kerberos 5 (krb5) 1.3.3 and earlier allow remote attackers to execute arbitrar…

published 2004-06-03 22 y ago modified 2026-06-16 4 mo ago also EUVD-2004-0522

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
11.7%
EPSS 11.7% chance of exploitation in 30 days, percentile 96%
public exploits
0
none known

Summary

Multiple buffer overflows in krb5_aname_to_localname for MIT Kerberos 5 (krb5) 1.3.3 and earlier allow remote attackers to execute arbitrary code as root.

Patch / fix

  • mit kerberos_5 1.3.4
  • mit krb5 1.3.4
  • krb5 Debian 14, Debian 13, Debian 12 1.3.3-2

debian advisories DEBIAN-CVE-2004-0523

  • krb5 RHEL 3 1.2.7-24
  • krb5-libs RHEL 3 1.2.7-24
  • krb5-server RHEL 3 1.2.7-24
  • krb5-workstation RHEL 3 1.2.7-24

red hat advisories RHSA-2004:236

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2004-0523 updated

security flaw

  • Red Hat Desktop version 3 krb5 1.2.7-24, krb5-libs 1.2.7-24, krb5-server 1.2.7-24, krb5-workstation 1.2.7-24 Red Hat Enterprise Linux AS version 3 krb5 1.2.7-24, krb5-libs 1.2.7-24, krb5-server 1.2.7-24, krb5-workstation 1.2.7-24 Red Hat Enterprise Linux ES version 3 krb5 1.2.7-24, krb5-libs 1.2.7-24, krb5-server 1.2.7-24, krb5-workstation 1.2.7-24 Red Hat Enterprise Linux WS version 3 krb5 1.2.7-24, krb5-libs 1.2.7-24, krb5-server 1.2.7-24, krb5-workstation 1.2.7-24
    fixed: vendor fix RHSA-2004:236

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

11.67% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Improve kerberos 5 affected range consistency.