{"id":"CVE-2025-5987","aliases":[],"cve":{"records":[{"id":"CVE-2025-5987","source":"redhat","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2025-06-10T21:55:45.552Z","published":"2025-07-07T14:24:12.576Z","modified":"2026-11-05T16:32:22.125Z"}],"publishers":[{"name":"redhat","role":"CNA","organizationId":"53f830b8-0a3f-465b-8143-3b8a9948e749","modified":"2026-11-05T16:32:22.125Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-02-26T18:27:55.575Z"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2025:23483","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2025:23484","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:0427","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:0428","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:0430","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:0431","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:0702","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:0978","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:0980","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:0985","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:0996","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:1539","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:1541","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:3415","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/security/cve/CVE-2025-5987","tags":["vdb-entry","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2376219","tags":["issue-tracking","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://www.libssh.org/security/advisories/CVE-2025-5987.txt","tags":[],"source":"redhat"}],"weaknesses":[{"id":"CWE-393","description":"Return of Wrong Status Code","source":"redhat"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-01-22T04:55:55.619672Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"total"}]}]},"title":"Libssh: invalid return code for chacha20 poly1305 with openssl backend","titleSource":"redhat","descriptionSource":"redhat","description":"A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected and may lead to libssh using a partially initialized cipher context. This occurs because the OpenSSL error code returned aliases with the SSH_OK code, resulting in libssh not properly detecting the error returned by the OpenSSL library. This issue can lead to undefined behavior, including compromised data confidentiality and integrity or crashes.","score":8.1,"severity":"high","published":"2025-07-07T14:24:12.576Z","modified":"2026-11-05T16:32:22.125Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"","name":"libssh","platforms":[],"versions":[{"version":"0.10.0","status":"affected","lessThan":"0.11.2","versionType":"semver"}],"defaultStatus":"unaffected","cpes":[],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 10","platforms":[],"versions":[{"version":"0:0.11.1-5.el10_1","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10.1"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 10.0 Extended Update Support","platforms":[],"versions":[{"version":"0:0.11.1-4.el10_0.1","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux_eus:10.0"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 9","platforms":[],"versions":[{"version":"0:0.10.4-17.el9_7","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:enterprise_linux:9::appstream","cpe:/o:redhat:enterprise_linux:9::baseos"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 9","platforms":[],"versions":[{"version":"0:0.10.4-17.el9_7","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:enterprise_linux:9::appstream","cpe:/o:redhat:enterprise_linux:9::baseos"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions","platforms":[],"versions":[{"version":"0:0.10.4-9.el9_2.2","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:rhel_e4s:9.2::appstream","cpe:/o:redhat:rhel_e4s:9.2::baseos"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 9.4 Extended Update Support","platforms":[],"versions":[{"version":"0:0.10.4-13.el9_4.2","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:rhel_eus:9.4::appstream","cpe:/o:redhat:rhel_eus:9.4::baseos"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 9.6 Extended Update Support","platforms":[],"versions":[{"version":"0:0.10.4-15.el9_6.1","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:rhel_eus:9.6::appstream","cpe:/o:redhat:rhel_eus:9.6::baseos"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"},{"vendor":"Red Hat","name":"Red Hat OpenShift Container Platform 4.13","platforms":[],"versions":[{"version":"413.92.202602240113-0","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4.13::el9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"},{"vendor":"Red Hat","name":"Red Hat OpenShift Container Platform 4.14","platforms":[],"versions":[{"version":"414.92.202601191325-0","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4.14::el9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"},{"vendor":"Red Hat","name":"Red Hat OpenShift Container Platform 4.15","platforms":[],"versions":[{"version":"415.92.202601271320-0","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4.15::el9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"},{"vendor":"Red Hat","name":"Red Hat OpenShift Container Platform 4.16","platforms":[],"versions":[{"version":"416.94.202601160124-0","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4.16::el9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"},{"vendor":"Red Hat","name":"Red Hat OpenShift Container Platform 4.17","platforms":[],"versions":[{"version":"417.94.202601120213-0","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4.17::el9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"},{"vendor":"Red Hat","name":"Red Hat OpenShift Container Platform 4.18","platforms":[],"versions":[{"version":"418.94.202601202224-0","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4.18::el9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"},{"vendor":"Red Hat","name":"Red Hat OpenShift Container Platform 4.19","platforms":[],"versions":[{"version":"4.19.9.6.202601260820-0","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4.19::el9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"},{"vendor":"Red Hat","name":"Red Hat OpenShift Container Platform 4.20","platforms":[],"versions":[{"version":"4.20.9.6.202601211057-0","status":"unaffected","lessThan":"*","versionType":"rpm"}],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4.20::el9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 6","platforms":[],"versions":[],"defaultStatus":"unknown","cpes":["cpe:/o:redhat:rhel_els:6"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 7","platforms":[],"versions":[],"defaultStatus":"unknown","cpes":["cpe:/o:redhat:rhel_els:7"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 8","platforms":[],"versions":[],"defaultStatus":"unaffected","cpes":["cpe:/a:redhat:enterprise_linux:8"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"},{"vendor":"Red Hat","name":"Red Hat OpenShift Container Platform 4","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"}],"remediation":[{"text":"A workaround for this issue is to disable the chacha20-poly1305@openssh.com cipher in applications using libssh when libssh is compiled with the OpenSSL backend, so the vulnerable ChaCha20-Poly1305 initialization path is not used. Alternatively, upgrade to a version of libssh containing the fix; upstream has released libssh 0.11.2 to correct this defect, and administrators are advised to upgrade or apply the upstream patch as soon as possible.","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"}],"references":["https://access.redhat.com/errata/RHSA-2025:23483","https://access.redhat.com/errata/RHSA-2025:23484","https://access.redhat.com/errata/RHSA-2026:0427","https://access.redhat.com/errata/RHSA-2026:0428","https://access.redhat.com/errata/RHSA-2026:0430","https://access.redhat.com/errata/RHSA-2026:0431","https://access.redhat.com/errata/RHSA-2026:0702","https://access.redhat.com/errata/RHSA-2026:0978","https://access.redhat.com/errata/RHSA-2026:0980","https://access.redhat.com/errata/RHSA-2026:0985","https://access.redhat.com/errata/RHSA-2026:0996","https://access.redhat.com/errata/RHSA-2026:1539","https://access.redhat.com/errata/RHSA-2026:1541","https://access.redhat.com/errata/RHSA-2026:3415","https://access.redhat.com/security/cve/CVE-2025-5987","https://bugzilla.redhat.com/show_bug.cgi?id=2376219","https://www.libssh.org/security/advisories/CVE-2025-5987.txt"],"sources":[{"name":"CVE","id":"CVE-2025-5987","modified":"2026-11-05T16:32:22.125Z","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"}],"assessments":[{"source":"redhat","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.1}],"sourceAffected":[],"observedAt":"2026-11-05T21:08:56.096Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T03:50:33.051Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":{"text":"Libssh versions before 0.11.2 are affected by a flaw when using the ChaCha20 cipher with the OpenSSL library, potentially leading to undefined behavior. An attacker must exhaust the heap space to trigger this issue. The flaw may compromise data confidentiality and integrity or cause crashes.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-06T04:21:21.114Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2025-5987"}]}}