{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-107778", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-08T20:02:23.913Z", "datePublished": "2026-10-08T20:15:54.159Z", "dateUpdated": "2026-10-09T11:50:03.488Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-08T20:15:54.159Z" }, "datePublic": "2026-05-19T00:00:00.000Z", "title": "MIT krb5 through 1.22.2 NULL Pointer Dereference via krb5_rd_cred()", "descriptions": [ { "lang": "en", "value": "MIT Kerberos 5 (krb5) through 1.22.2 contains a NULL pointer dereference in make_cred_list() in rd_cred.c that allows authenticated Kerberos clients to crash services by sending mismatched KRB-CRED arrays. Attackers can send forwarded credentials with more tickets than ticket_info entries through gss_accept_sec_context() to crash GSS-API acceptor services, causing denial of service." } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "NULL Pointer Dereference", "cweId": "CWE-476", "type": "CWE" } ] } ], "affected": [ { "vendor": "MIT", "product": "krb5", "collectionURL": "https://github.com/krb5/krb5", "packageURL": "pkg:github/krb5/krb5", "repo": "https://github.com/krb5/krb5", "defaultStatus": "unaffected", "versions": [ { "version": "0", "lessThanOrEqual": "1.22.2", "status": "affected", "versionType": "custom" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:*", "versionEndIncluding": "1.22.2" } ] } ] } ], "metrics": [ { "format": "CVSS", "cvssV4_0": { "version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 7.1, "baseSeverity": "HIGH" } }, { "format": "CVSS", "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM" } } ], "references": [ { "url": "https://github.com/krb5/krb5/pull/1511", "tags": [ "issue-tracking", "patch" ], "name": "Pull Request #1511" }, { "url": "https://github.com/krb5/krb5/commit/48afa9abb89ab2176bb20624d87d010b9984fc08", "tags": [ "patch" ], "name": "Patch Commit" }, { "url": "https://github.com/krb5/krb5/commit/62196e2b269159a5465f5b8d0ed7cf6f29c3282a", "tags": [ "patch" ] }, { "url": "https://github.com/krb5/krb5/blob/krb5-1.22.2-final/src/lib/krb5/krb/rd_cred.c#L77-L112", "tags": [ "technical-description" ] }, { "url": "https://github.com/krb5/krb5", "tags": [ "product" ] }, { "name": "VulnCheck Advisory: MIT krb5 through 1.22.2 NULL Pointer Dereference via krb5_rd_cred()", "tags": [ "third-party-advisory" ], "url": "https://www.vulncheck.com/advisories/mit-krb5-through-1.22.2-null-pointer-dereference-via-krb5-rd-cred" } ], "credits": [ { "lang": "en", "value": "Tristan Madani", "type": "finder" } ], "x_generator": { "engine": "vulncheck-endgame" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-10-09T11:49:50.551974Z", "id": "CVE-2026-107778", "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": "2026-10-09T11:50:03.488Z" } } ] } }