{"id":"CVE-2019-16905","revision":"919c9c5a2d304173ae69d2e760628ee6","records":[{"revision":"919c9c5a2d304173ae69d2e760628ee6","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2019-16905","aliases":[],"title":"OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This leads to memory corruption and local code…","description":"OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This leads to memory corruption and local code execution because of an error in the XMSS key parsing algorithm. NOTE: the XMSS implementation is considered experimental in all released OpenSSH versions, and there is no supported way to enable it when building portable OpenSSH.","state":0,"publishedAt":"2019-10-09T00:00:00+00:00","modifiedAt":"2026-10-14T06:54:43.458+00:00","affected":[{"ecosystem":"Vendor product","name":"n/a","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"n/a\",\n                    \"product\": \"n/a\",\n                    \"versions\": [\n                        {\n                            \"version\": \"n/a\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://www.openssh.com/releasenotes.html","https://www.openwall.com/lists/oss-security/2019/10/09/1","https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5&r2=1.6&f=h","https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c","https://bugzilla.suse.com/show_bug.cgi?id=1153537","https://ssd-disclosure.com/archives/4033/ssd-advisory-openssh-pre-auth-xmss-integer-overflow","https://security.netapp.com/advisory/ntap-20191024-0003/","https://security.gentoo.org/glsa/201911-01","https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2019-16905","license":"CVE Program Terms of Use","key":"cve-program:CVE-2019-16905","identifiers":["CVE-2019-16905"]},"retained":false,"historicalAffected":[]}],"coverage":[]}