{"cve":"CVE-2022-3996","nvd":{"published":"2022-12-13T16:15:22.007","modified":"2026-06-17T05:00:44.367","status":"Modified","description":"If an X.509 certificate contains a malformed policy constraint and\npolicy processing is enabled, then a write lock will be taken twice\nrecursively.  On some operating systems (most widely: Windows) this\nresults in a denial of service when the affected process hangs.  Policy\nprocessing being enabled on a publicly facing server is not considered\nto be a common setup.\n\nPolicy processing is enabled by passing the `-policy'\nargument to the command line utilities or by calling the\n`X509_VERIFY_PARAM_set1_policies()' function.\n\nUpdate (31 March 2023): The description of the policy processing enablement\nwas corrected based on CVE-2023-0466.","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-667"],"references":["https://github.com/openssl/openssl/commit/7725e7bfe6f2ce8146b6552b44e0d226be7638e7","https://www.openssl.org/news/secadv/20221213.txt","https://github.com/openssl/openssl/commit/7725e7bfe6f2ce8146b6552b44e0d226be7638e7","https://security.netapp.com/advisory/ntap-20230203-0003/","https://www.openssl.org/news/secadv/20221213.txt"],"products":["openssl:openssl"],"source":"nvd","synced_at":"2026-10-19T21:37:28.463369388+00:00"},"epss":{"cve":"CVE-2022-3996","score":0.01312,"percentile":0.70674,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-vr8j-hgmm-jh9r","url":"https://osv.dev/vulnerability/GHSA-vr8j-hgmm-jh9r","summary":"Denial of service by double-checked locking in openssl-src","modified":"2026-09-10T03:49:50.494201995Z","packages":[{"ecosystem":"crates.io","name":"openssl-src","purl":"pkg:cargo/openssl-src","ranges":[">=300.0.0 <300.0.12"],"fixed":["300.0.12"]}]}],"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."]}