{"cve":"CVE-2003-0138","nvd":{"published":"2003-03-24T05:00:00.000","modified":"2026-06-16T22:01:37.493","status":"Modified","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.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://marc.info/?l=bugtraq&m=104791775804776&w=2","http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2003-004-krb4.txt","http://www.debian.org/security/2003/dsa-266","http://www.debian.org/security/2003/dsa-269","http://www.debian.org/security/2003/dsa-273"],"products":["mit:kerberos"],"source":"nvd","synced_at":"2026-10-19T19:35:54.859949650+00:00"},"epss":{"cve":"CVE-2003-0138","score":0.04284,"percentile":0.91112,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}