{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-110602", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-14T13:07:20.909Z", "datePublished": "2026-10-14T14:16:43.661Z", "dateUpdated": "2026-10-14T18:01:09.032Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-14T14:16:43.661Z" }, "datePublic": "2026-10-14T00:00:00.000Z", "title": "libmspack through 0.11alpha Uninitialized Pointer Free via kwajd_open Error Path", "descriptions": [ { "lang": "en", "value": "libmspack through 0.11alpha contains an uninitialized pointer free vulnerability in kwajd_open() in mspack/kwajd.c that frees unzeroed filename and extra pointers on header read errors. Attackers can supply a truncated, empty, or wrong-signature KWAJ file to crash the process or obtain an arbitrary-free memory corruption primitive." } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "Access of Uninitialized Pointer", "cweId": "CWE-824", "type": "CWE" } ] } ], "affected": [ { "vendor": "kyz", "product": "libmspack", "defaultStatus": "unaffected", "versions": [ { "version": "0", "lessThanOrEqual": "0.11alpha", "status": "affected", "versionType": "custom" } ], "packageURL": "pkg:github/kyz/libmspack", "collectionURL": "https://github.com", "repo": "https://github.com/kyz/libmspack" } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:libmspack_project:libmspack:*:*:*:*:*:*:*:*", "versionEndIncluding": "0.11alpha" } ] } ] } ], "metrics": [ { "format": "CVSS", "cvssV4_0": { "version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 5.8, "baseSeverity": "MEDIUM" } }, { "format": "CVSS", "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 6.3, "baseSeverity": "MEDIUM" } } ], "references": [ { "url": "https://github.com/kyz/libmspack/commit/4d868504114346aa767d435fbb89a8b76603493f", "tags": [ "patch" ] }, { "url": "https://github.com/kyz/libmspack/blob/v0.11alpha/libmspack/mspack/kwajd.c#L111-L181", "tags": [ "technical-description" ] }, { "url": "https://hackmd.io/@haind-pwn/libmspack-kwaj-uninitialized-free", "tags": [ "third-party-advisory" ] }, { "name": "VulnCheck Advisory: libmspack through 0.11alpha Uninitialized Pointer Free via kwajd_open Error Path", "tags": [ "third-party-advisory" ], "url": "https://www.vulncheck.com/advisories/libmspack-through-0-11alpha-uninitialized-pointer-free-via-kwajd-open-error-path" } ], "credits": [ { "lang": "en", "value": "HaiND from the Post and Telecommunication Institute of Technology", "type": "finder" } ], "x_generator": { "engine": "vulncheck-endgame" } }, "adp": [ { "references": [ { "url": "https://hackmd.io/@haind-pwn/libmspack-kwaj-uninitialized-free", "tags": [ "exploit" ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-10-14T17:59:54.674497Z", "id": "CVE-2026-110602", "options": [ { "Exploitation": "poc" }, { "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": "2026-10-14T18:01:09.032Z" } } ] } }