{"cve":"CVE-2021-44758","nvd":{"published":"2022-12-26T05:15:10.503","modified":"2026-06-17T04:12:49.617","status":"Modified","description":"Heimdal before 7.7.1 allows attackers to cause a NULL pointer dereference in a SPNEGO acceptor via a preferred_mech_type of GSS_C_NO_OID and a nonzero initial_response value to send_accept.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-476"],"references":["https://github.com/heimdal/heimdal/commit/f9ec7002cdd526ae84fbacbf153162e118f22580","https://github.com/heimdal/heimdal/security/advisories/GHSA-69h9-669w-88xv","https://security.gentoo.org/glsa/202310-06","https://github.com/heimdal/heimdal/commit/f9ec7002cdd526ae84fbacbf153162e118f22580","https://github.com/heimdal/heimdal/security/advisories/GHSA-69h9-669w-88xv"],"products":["heimdal_project:heimdal"],"source":"nvd","synced_at":"2026-10-19T21:37:31.370122805+00:00"},"epss":{"cve":"CVE-2021-44758","score":0.01328,"percentile":0.71009,"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."]}