{"id":"CVE-2025-8277","url":"https://www.cyber-defence.io/tools/cve/CVE-2025-8277","generatedAt":"2026-10-28T02:12:05.284Z","title":"This issue can lead to crashes on the client side, particularly when using libgcrypt, which impacts application stability and availability.","description":"A flaw was found in libssh's handling of key exchange (KEX) processes when a client repeatedly sends incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually exhaust system memory. This issue can lead to crashes on the client side, particularly when using libgcrypt, which impacts application stability and availability.","published":"2025-09-09T12:15:31.000Z","lastModified":"2026-10-18T21:10:00.000Z","status":"Deferred","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"3.1","score":3.1,"severity":"LOW","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L"},"cwe":["CWE-401"],"affected":[],"epss":{"score":0.00431,"percentile":0.37135,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.43%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:18683","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2025-8277","source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2383888","source":"secalert@redhat.com"},{"url":"https://www.libssh.org/security/advisories/CVE-2025-8277.txt","source":"secalert@redhat.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-8277","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}