{"id":"CVE-2026-59842","title":"A flaw was found in libssh","summary":"A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could al…","severity":"low","cvss":3.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-125"],"vendor":"libssh","product":"libssh","affected":["libssh = 0.12.0","hardened_images","enterprise_linux = 10.0","enterprise_linux = 10.2","enterprise_linux_for_els = 10.2","enterprise_linux_for_eus = 10.2","enterprise_linux_for_ibm_z_systems = 10.0","enterprise_linux_for_ibm_z_systems = 10.2","enterprise_linux_for_ibm_z_systems_els = 10.2","enterprise_linux_for_ibm_z_systems_eus = 10.2","enterprise_linux_for_power_little_endian = 10.0","enterprise_linux_for_power_little_endian = 10.2","enterprise_linux_for_power_little_endian_els = 10.2","enterprise_linux_for_power_little_endian_eus = 10.2"],"published":"2026-07-21","updated":"2026-09-22","sourceUpdated":"2026-09-22T19:47:55.080","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-59842","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:42922","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:55855","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-59842","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2498168","label":"secalert@redhat.com"}],"tags":["nvd"],"epss":0.00408,"epssPercentile":0.34838,"ingestedAt":"2026-09-22T20:10:15.030Z","slug":"CVE-2026-59842","body":"## Overview\n\nA flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could allow a remote unauthenticated attacker to disclose small amounts of server memory.\n\n## Affected\n\n- `libssh = 0.12.0`\n- `hardened_images`\n- `enterprise_linux = 10.0`\n- `enterprise_linux = 10.2`\n- `enterprise_linux_for_els = 10.2`\n- `enterprise_linux_for_eus = 10.2`\n- `enterprise_linux_for_ibm_z_systems = 10.0`\n- `enterprise_linux_for_ibm_z_systems = 10.2`\n- `enterprise_linux_for_ibm_z_systems_els = 10.2`\n- `enterprise_linux_for_ibm_z_systems_eus = 10.2`\n- `enterprise_linux_for_power_little_endian = 10.0`\n- `enterprise_linux_for_power_little_endian = 10.2`\n- `enterprise_linux_for_power_little_endian_els = 10.2`\n- `enterprise_linux_for_power_little_endian_eus = 10.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":20,"depthScoreParts":{"impact":20.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}