CVE-2004-0523

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.

Published: 2004-08-18 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2004-0523 is rated High Risk (68.4/100): CVSS Critical severity, with high exploitation likelihood (EPSS 11.67%, 95th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2004-0523

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 25.93% 11.67% -14.26%
2 2026-03-02 16.71% 25.93% +9.22%
3 2026-02-06 — 16.71% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2004-0523

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2004-0523

OS Trackers for CVE-2004-0523

vendor priority summary link
debian not yet assigned CVE-2004-0523 not yet assigned priority: Debian including 1 source packages (krb5), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2004-0523
redhat medium — https://access.redhat.com/security/cve/CVE-2004-0523
ubuntu medium CVE-2004-0523 medium priority: Ubuntu including 1 source packages (krb5), 4 status rows across 4 suites (dapper, edgy, feisty, upstream): released 3, needs-triage 1. https://ubuntu.com/security/CVE-2004-0523

Affected software / configurations for CVE-2004-0523

Vendor Product Version Raw CPE
mit kerberos 1.0 cpe:2.3:a:mit:kerberos:1.0:*:*:*:*:*:*:*
mit kerberos 1.0.8 cpe:2.3:a:mit:kerberos:1.0.8:*:*:*:*:*:*:*
mit kerberos 1.2.2.beta1 cpe:2.3:a:mit:kerberos:1.2.2.beta1:*:*:*:*:*:*:*
mit kerberos_5 1.0 cpe:2.3:a:mit:kerberos_5:1.0:*:*:*:*:*:*:*
mit kerberos_5 1.0.6 cpe:2.3:a:mit:kerberos_5:1.0.6:*:*:*:*:*:*:*
mit kerberos_5 1.1 cpe:2.3:a:mit:kerberos_5:1.1:*:*:*:*:*:*:*
mit kerberos_5 1.1.1 cpe:2.3:a:mit:kerberos_5:1.1.1:*:*:*:*:*:*:*
mit kerberos_5 1.2 cpe:2.3:a:mit:kerberos_5:1.2:*:*:*:*:*:*:*
mit kerberos_5 1.2 cpe:2.3:a:mit:kerberos_5:1.2:beta1:*:*:*:*:*:*
mit kerberos_5 1.2 cpe:2.3:a:mit:kerberos_5:1.2:beta2:*:*:*:*:*:*
mit kerberos_5 1.2.1 cpe:2.3:a:mit:kerberos_5:1.2.1:*:*:*:*:*:*:*
mit kerberos_5 1.2.2 cpe:2.3:a:mit:kerberos_5:1.2.2:*:*:*:*:*:*:*
mit kerberos_5 1.2.3 cpe:2.3:a:mit:kerberos_5:1.2.3:*:*:*:*:*:*:*
mit kerberos_5 1.2.4 cpe:2.3:a:mit:kerberos_5:1.2.4:*:*:*:*:*:*:*
mit kerberos_5 1.2.5 cpe:2.3:a:mit:kerberos_5:1.2.5:*:*:*:*:*:*:*
mit kerberos_5 1.2.6 cpe:2.3:a:mit:kerberos_5:1.2.6:*:*:*:*:*:*:*
mit kerberos_5 1.2.7 cpe:2.3:a:mit:kerberos_5:1.2.7:*:*:*:*:*:*:*
mit kerberos_5 1.3 cpe:2.3:a:mit:kerberos_5:1.3:*:*:*:*:*:*:*
mit kerberos_5 1.3 cpe:2.3:a:mit:kerberos_5:1.3:alpha1:*:*:*:*:*:*
mit kerberos_5 1.3.3 cpe:2.3:a:mit:kerberos_5:1.3.3:*:*:*:*:*:*:*
sgi propack 2.4 cpe:2.3:a:sgi:propack:2.4:*:*:*:*:*:*:*
sgi propack 3.0 cpe:2.3:a:sgi:propack:3.0:*:*:*:*:*:*:*
sun seam 1.0 cpe:2.3:a:sun:seam:1.0:*:*:*:*:*:*:*
sun seam 1.0.1 cpe:2.3:a:sun:seam:1.0.1:*:*:*:*:*:*:*
sun seam 1.0.2 cpe:2.3:a:sun:seam:1.0.2:*:*:*:*:*:*:*
tinysofa tinysofa_enterprise_server 1.0 cpe:2.3:a:tinysofa:tinysofa_enterprise_server:1.0:*:*:*:*:*:*:*
tinysofa tinysofa_enterprise_server 1.0_u1 cpe:2.3:a:tinysofa:tinysofa_enterprise_server:1.0_u1:*:*:*:*:*:*:*
sun solaris 8.0 cpe:2.3:o:sun:solaris:8.0:*:x86:*:*:*:*:*
sun solaris 9.0 cpe:2.3:o:sun:solaris:9.0:*:sparc:*:*:*:*:*
sun solaris 9.0 cpe:2.3:o:sun:solaris:9.0:*:x86:*:*:*:*:*
sun sunos 5.8 cpe:2.3:o:sun:sunos:5.8:*:*:*:*:*:*:*

References for CVE-2004-0523

URL Tags
ftp://patches.sgi.com/support/free/security/advisories/20040604-01-U.asc
ftp://patches.sgi.com/support/free/security/advisories/20040605-01-U.asc
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000860
http://lwn.net/Articles/88206/
http://marc.info/?l=bugtraq&m=108612325909496&w=2
http://marc.info/?l=bugtraq&m=108619161815320&w=2
http://marc.info/?l=bugtraq&m=108619250923790&w=2
http://sunsolve.sun.com/search/document.do?assetkey=1-26-101512-1
http://www.debian.org/security/2004/dsa-520 Patch Vendor Advisory
http://www.gentoo.org/security/en/glsa/glsa-200406-21.xml
http://www.kb.cert.org/vuls/id/686862 Third Party Advisory US Government Resource
http://www.mandrakesecure.net/en/advisories/advisory.php?name=MDKSA-2004:056
http://www.redhat.com/support/errata/RHSA-2004-236.html
http://www.securityfocus.com/bid/10448
https://exchange.xforce.ibmcloud.com/vulnerabilities/16268
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10295
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2002
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A724
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A991
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