CVE-2026-63448

{"id": "CVE-2026-63448", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-63448", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-22T15:48:35.862458Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"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}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "OISF", "product": "suricata", "versions": [{"status": "affected", "version": ">= 8.0.0, < 8.0.6"}, {"status": "affected", "version": "< 7.0.17"}]}]}], "published": "2026-09-18T21:17:04.060", "references": [{"url": "https://github.com/OISF/suricata/commit/755d6c3061de4d7ba97f0ed31cdc17ab8cab4476", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OISF/suricata/commit/7ec9d72d28b9370712cf77a5b9d40d6b5db27cb4", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OISF/suricata/commit/88adab8bd3d62912941647ab65032d5ec75c893a", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OISF/suricata/commit/9a54a043516e644bb7b9d34117a91977f950a281", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OISF/suricata/commit/bc39274a638d1cca2391cfa4891c8b6c255ff9ce", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OISF/suricata/commit/c8f68b0e4f9e721dca1c9ed6e08597c6964c7ac3", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OISF/suricata/releases/tag/suricata-7.0.17", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OISF/suricata/releases/tag/suricata-8.0.6", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OISF/suricata/security/advisories/GHSA-hvvj-c8xx-9g35", "tags": ["Mitigation", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://redmine.openinfosecfoundation.org/issues/8629", "tags": ["Permissions Required"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-400"}, {"lang": "en", "value": "CWE-401"}, {"lang": "en", "value": "CWE-407"}]}], "descriptions": [{"lang": "en", "value": "Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.17 and 8.0.6, the SMB parser can retain force-completed transactions on flows where Suricata sees payload in only one direction, including async-oneside flows, because cleanup waits for inspection in the unseen direction. The transaction creation paths in rust/src/smb can exceed the intended SMB_MAX_TX bound, and cleanup repeatedly scans the growing list. Sustained one-directional SMB traffic can therefore cause unbounded per-flow state and CPU and memory exhaustion. This issue is fixed in versions 8.0.6 and 7.0.17."}], "lastModified": "2026-09-28T18:33:31.947", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EBABA2A6-27D4-455F-B761-CE55E448863F", "versionEndExcluding": "7.0.17"}, {"criteria": "cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BAC11753-611D-4E10-9F9B-1C21DD2371C4", "versionEndExcluding": "8.0.6", "versionStartIncluding": "8.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}