CVE-2003-0138
UnknownEPSS 4.28%
Last modified
CVE-2003-0138 is a vulnerability of currently unknown severity. Version 4 of the Kerberos protocol (krb4), as used in Heimdal and other packages, allows an attacker to impersonate any principal in a realm via a chosen-plaintext attack.. EPSS estimates a 4.28% chance of exploitation in the next 30 days.
Description
Version 4 of the Kerberos protocol (krb4), as used in Heimdal and other packages, allows an attacker to impersonate any principal in a realm via a chosen-plaintext attack.
Metrics
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mit | Kerberos | 4 |
References
- http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2003-004-krb4.txtPatch, Vendor Advisory
- http://www.debian.org/security/2003/dsa-266Patch, Vendor Advisory
- http://www.kb.cert.org/vuls/id/623217Patch, Third Party Advisory, US Government Resource
- http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2003-004-krb4.txtPatch, Vendor Advisory
- http://www.debian.org/security/2003/dsa-266Patch, Vendor Advisory
- http://www.kb.cert.org/vuls/id/623217Patch, Third Party Advisory, US Government Resource
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2003-0138?
Version 4 of the Kerberos protocol (krb4), as used in Heimdal and other packages, allows an attacker to impersonate any principal in a realm via a chosen-plaintext attack.
How severe is CVE-2003-0138?
Severity scoring for CVE-2003-0138 is pending analysis. The EPSS model estimates a 4.28% probability of exploitation in the next 30 days.
How do I fix CVE-2003-0138?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2003-0138?
Run a free Strix scan to check your systems for this vulnerability.
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