{"cve":"CVE-2022-0336","nvd":{"published":"2022-08-29T15:15:09.250","modified":"2026-06-17T04:20:25.030","status":"Modified","description":"The Samba AD DC includes checks when adding service principals names (SPNs) to an account to ensure that SPNs do not alias with those already in the database. Some of these checks are able to be bypassed if an account modification re-adds an SPN that was previously present on that account, such as one added when a computer is joined to a domain. An attacker who has the ability to write to an account can exploit this to perform a denial-of-service attack by adding an SPN that matches an existing service. Additionally, an attacker who can intercept traffic can impersonate existing services, resulting in a loss of confidentiality and integrity.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-276"],"references":["https://access.redhat.com/security/cve/CVE-2022-0336","https://bugzilla.redhat.com/show_bug.cgi?id=2046134","https://bugzilla.samba.org/show_bug.cgi?id=14950","https://github.com/samba-team/samba/commit/1a5dc817c0c9379bbaab14c676681b42b0039a3c","https://github.com/samba-team/samba/commit/c58ede44f382bd0125f761f0479c8d48156be400"],"products":["fedoraproject:fedora","samba:samba"],"source":"nvd","synced_at":"2026-10-19T21:35:14.992143698+00:00"},"epss":{"cve":"CVE-2022-0336","score":0.01755,"percentile":0.77933,"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."]}