{"cve":"CVE-2013-4548","nvd":{"published":"2013-11-08T15:55:13.747","modified":"2026-06-16T23:57:25.917","status":"Modified","description":"The mm_newkeys_from_blob function in monitor_wrap.c in sshd in OpenSSH 6.2 and 6.3, when an AES-GCM cipher is used, does not properly initialize memory for a MAC context data structure, which allows remote authenticated users to bypass intended ForceCommand and login-shell restrictions via packet data that provides a crafted callback address.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-264"],"references":["http://lists.opensuse.org/opensuse-security-announce/2013-11/msg00017.html","http://marc.info/?l=bugtraq&m=141576985122836&w=2","http://openwall.com/lists/oss-security/2013/11/08/3","http://www.openssh.com/txt/gcmrekey.adv","http://www.ubuntu.com/usn/USN-2014-1"],"products":["openbsd:openssh"],"source":"nvd","synced_at":"2026-10-19T20:30:15.895642412+00:00"},"epss":{"cve":"CVE-2013-4548","score":0.0267,"percentile":0.85758,"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."]}