CVE-2025-26466

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://access.redhat.com/security/cve/CVE-2025-26466", "name": "https://access.redhat.com/security/cve/CVE-2025-26466", "tags": ["Third Party Advisory"], "refsource": ""}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2345043", "name": "RHBZ#2345043", "tags": ["Issue Tracking"], "refsource": ""}, {"url": "https://bugzilla.suse.com/show_bug.cgi?id=1237041", "name": "https://bugzilla.suse.com/show_bug.cgi?id=1237041", "tags": ["Third Party Advisory"], "refsource": ""}, {"url": "https://seclists.org/oss-sec/2025/q1/144", "name": "https://seclists.org/oss-sec/2025/q1/144", "tags": [], "refsource": ""}, {"url": "https://security.netapp.com/advisory/ntap-20250228-0002/", "name": "https://security.netapp.com/advisory/ntap-20250228-0002/", "tags": ["Third Party Advisory"], "refsource": ""}, {"url": "https://security-tracker.debian.org/tracker/CVE-2025-26466", "name": "https://security-tracker.debian.org/tracker/CVE-2025-26466", "tags": ["Third Party Advisory"], "refsource": ""}, {"url": "https://ubuntu.com/security/CVE-2025-26466", "name": "https://ubuntu.com/security/CVE-2025-26466", "tags": ["Third Party Advisory"], "refsource": ""}, {"url": "https://www.openwall.com/lists/oss-security/2025/02/18/1", "name": "https://www.openwall.com/lists/oss-security/2025/02/18/1", "tags": ["Mailing List", "Third Party Advisory"], "refsource": ""}, {"url": "https://www.openwall.com/lists/oss-security/2025/02/18/4", "name": "https://www.openwall.com/lists/oss-security/2025/02/18/4", "tags": ["Mailing List", "Third Party Advisory"], "refsource": ""}, {"url": "https://www.qualys.com/2025/02/18/openssh-mitm-dos.txt", "name": "https://www.qualys.com/2025/02/18/openssh-mitm-dos.txt", "tags": ["Third Party Advisory"], "refsource": ""}, {"url": "https://www.qualys.com/2025/02/18/openssh-mitm-dos.txt", "name": "https://www.qualys.com/2025/02/18/openssh-mitm-dos.txt", "tags": ["Third Party Advisory"], "refsource": ""}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is allocated in a memory buffer and stored in a queue of packages. It is only freed when the server/client key exchange has finished. A malicious client may keep sending such packages, leading to an uncontrolled increase in memory consumption on the server side. Consequently, the server may become unavailable, resulting in a denial of service attack."}]}, "problemtype": {"problemtype_data": [{"description": []}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2025-26466", "ASSIGNER": "secalert@redhat.com"}}, "impact": {"baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.2}}, "publishedDate": "2025-02-28T22:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:openbsd:openssh:9.8:-:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:openbsd:openssh:9.9:-:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:openbsd:openssh:9.9:p1:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:openbsd:openssh:9.5:p1:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:openbsd:openssh:9.6:-:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:openbsd:openssh:9.6:p1:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:openbsd:openssh:9.7:-:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:openbsd:openssh:9.7:p1:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:openbsd:openssh:9.8:p1:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:24.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:24.10:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:debian:debian_linux:13.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2025-05-27T16:15Z"}