CVE-2026-48852

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-48852", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "state": "PUBLISHED", "assignerShortName": "mitre", "dateReserved": "2026-05-25T20:19:20.308Z", "datePublished": "2026-05-25T20:19:20.809Z", "dateUpdated": "2026-05-26T12:39:14.852Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "PuTTY", "vendor": "PuTTY", "versions": [{"lessThan": "0.84", "status": "affected", "version": "0.71", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "PuTTY 0.71 before 0.84 has an assertion failure in ECDSA signature verification."}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 3.7, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-617", "description": "CWE-617 Reachable Assertion", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-05-25T20:19:20.809Z"}, "references": [{"url": "https://lists.tartarus.org/pipermail/putty-announce/2026/000042.html"}, {"url": "https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/ecdsa-remotely-triggerable-assertion.html"}], "x_generator": {"engine": "CVE-Request-form 0.0.1"}, "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:putty:putty:*:*:*:*:*:*:*:*", "versionStartIncluding": "0.71", "versionEndExcluding": "0.84"}]}]}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-26T12:39:09.980944Z", "id": "CVE-2026-48852", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-26T12:39:14.852Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-48852", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-26T12:39:09.980944Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-26T12:39:12.140Z"}}], "cna": {"metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 3.7, "attackVector": "NETWORK", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "PuTTY", "product": "PuTTY", "versions": [{"status": "affected", "version": "0.71", "lessThan": "0.84", "versionType": "custom"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://lists.tartarus.org/pipermail/putty-announce/2026/000042.html"}, {"url": "https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/ecdsa-remotely-triggerable-assertion.html"}], "x_generator": {"engine": "CVE-Request-form 0.0.1"}, "descriptions": [{"lang": "en", "value": "PuTTY 0.71 before 0.84 has an assertion failure in ECDSA signature verification."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-617", "description": "CWE-617 Reachable Assertion"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:putty:putty:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "0.84", "versionStartIncluding": "0.71"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-05-25T20:19:20.809Z"}}}, "cveMetadata": {"cveId": "CVE-2026-48852", "state": "PUBLISHED", "dateUpdated": "2026-05-26T12:39:14.852Z", "dateReserved": "2026-05-25T20:19:20.308Z", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "datePublished": "2026-05-25T20:19:20.809Z", "assignerShortName": "mitre"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "PuTTY", "vendor": "PuTTY", "versions": [{"lessThan": "0.84", "status": "affected", "version": "0.71", "versionType": "custom"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:putty:putty:*:*:*:*:*:*:*:*", "matchCriteriaId": "DBD411E8-7918-4D91-A16A-50C30DD814F4", "versionEndExcluding": "0.84", "versionStartIncluding": "0.71", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "PuTTY 0.71 before 0.84 has an assertion failure in ECDSA signature verification."}, {"lang": "es", "value": "PuTTY 0.71 anterior a 0.84 tiene un fallo de aserci\u00f3n en la verificaci\u00f3n de firma ECDSA."}], "id": "CVE-2026-48852", "lastModified": "2026-07-24T10:10:00.197", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 3.7, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 1.4, "source": "cve@mitre.org", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-48852", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-26T12:39:09.980944Z", "version": "2.0.3"}}]}, "published": "2026-05-25T21:16:35.543", "references": [{"source": "cve@mitre.org", "tags": ["Release Notes"], "url": "https://lists.tartarus.org/pipermail/putty-announce/2026/000042.html"}, {"source": "cve@mitre.org", "tags": ["Patch", "Vendor Advisory"], "url": "https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/ecdsa-remotely-triggerable-assertion.html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-617"}], "source": "cve@mitre.org", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0.71,0.84)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "PuTTY", "source": "cna", "vendor": "PuTTY"}, "product": "putty", "vendor": "putty"}], "created": "2026-05-25T21:30:05.773358+00:00", "title": "Assertion Failure in ECDSA Host Key Verification in PuTTY", "updated": "2026-05-25T22:30:16.101881+00:00", "vendors": ["putty", "putty$PRODUCT$putty"]}