{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-18495", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-07-31T15:34:43.453Z", "datePublished": "2026-09-11T17:41:36.400Z", "dateUpdated": "2026-10-07T17:41:38.164Z" }, "containers": { "cna": { "title": "Libtiff: libtiff: heap-buffer overflow via numeric truncation in the jpeg raw passthrough", "metrics": [ { "other": { "content": { "value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:H", "version": "3.1" }, "format": "CVSS" } ], "descriptions": [ { "lang": "en", "value": "A flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the `tiff2pdf` utility due to an integer truncation error when processing crafted BigTIFF files. An attacker can provide a specially crafted BigTIFF file, causing a 64-bit `StripByteCounts` value to be truncated to a 32-bit integer. This leads to an undersized memory allocation and a subsequent out-of-bounds memory copy, resulting in a crash and severe memory corruption." } ], "affected": [ { "vendor": "Red Hat", "product": "Red Hat Hardened Images", "collectionURL": "https://catalog.redhat.com/software/containers/", "packageName": "libtiff-main", "defaultStatus": "affected", "versions": [ { "version": "4.7.2-2.hum1", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:hummingbird:1" ] }, { "vendor": "Red Hat", "product": "Red Hat Ceph Storage 4", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "ceph", "defaultStatus": "unaffected", "cpes": [ "cpe:/a:redhat:ceph_storage:4" ] }, { "vendor": "Red Hat", "product": "Red Hat Ceph Storage 6", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "ceph", "defaultStatus": "unaffected", "cpes": [ "cpe:/a:redhat:ceph_storage:6" ] }, { "vendor": "Red Hat", "product": "Red Hat Ceph Storage 7", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "ceph", "defaultStatus": "unaffected", "cpes": [ "cpe:/a:redhat:ceph_storage:7" ] }, { "vendor": "Red Hat", "product": "Red Hat Ceph Storage 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "ceph", "defaultStatus": "unaffected", "cpes": [ "cpe:/a:redhat:ceph_storage:8" ] }, { "vendor": "Red Hat", "product": "Red Hat Ceph Storage 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "ceph", "defaultStatus": "unaffected", "cpes": [ "cpe:/a:redhat:ceph_storage:9" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "boost", "defaultStatus": "unaffected", "cpes": [ "cpe:/o:redhat:enterprise_linux:10" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "ceph", "defaultStatus": "unaffected", "cpes": [ "cpe:/o:redhat:enterprise_linux:10" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "libtiff", "defaultStatus": "affected", "cpes": [ "cpe:/o:redhat:enterprise_linux:10" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "libtiff", "defaultStatus": "unknown", "cpes": [ "cpe:/o:redhat:enterprise_linux:6" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "compat-libtiff3", "defaultStatus": "affected", "cpes": [ "cpe:/o:redhat:enterprise_linux:7" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "libtiff", "defaultStatus": "affected", "cpes": [ "cpe:/o:redhat:enterprise_linux:7" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "compat-libtiff3", "defaultStatus": "affected", "cpes": [ "cpe:/o:redhat:enterprise_linux:8" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "libtiff", "defaultStatus": "affected", "cpes": [ "cpe:/o:redhat:enterprise_linux:8" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "mingw-libtiff", "defaultStatus": "affected", "cpes": [ "cpe:/o:redhat:enterprise_linux:8" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "boost", "defaultStatus": "unaffected", "cpes": [ "cpe:/o:redhat:enterprise_linux:9" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "ceph", "defaultStatus": "unaffected", "cpes": [ "cpe:/o:redhat:enterprise_linux:9" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "libtiff", "defaultStatus": "affected", "cpes": [ "cpe:/o:redhat:enterprise_linux:9" ] }, { "vendor": "Red Hat", "product": "Red Hat Hardened Images", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "boost", "defaultStatus": "unaffected", "cpes": [ "cpe:/a:redhat:hummingbird:1" ] } ], "references": [ { "url": "https://access.redhat.com/errata/RHSA-2026:53467", "name": "RHSA-2026:53467", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/security/cve/CVE-2026-18495", "tags": [ "vdb-entry", "x_refsource_REDHAT" ] }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2531414", "name": "RHBZ#2531414", "tags": [ "issue-tracking", "x_refsource_REDHAT" ] }, { "url": "https://gitlab.com/libtiff/libtiff/-/merge_requests/729" }, { "url": "https://gitlab.com/libtiff/libtiff/-/tree/67fd283d276f09db54dc39b9ef7b979d4b45c4b1" } ], "datePublic": "2026-08-20T00:00:00.000Z", "problemTypes": [ { "descriptions": [ { "cweId": "CWE-122", "description": "Heap-based Buffer Overflow", "lang": "en", "type": "CWE" } ] } ], "x_redhatCweChain": "CWE-122: Heap-based Buffer Overflow", "timeline": [ { "lang": "en", "time": "2026-07-24T00:00:00.000Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2026-08-20T00:00:00.000Z", "value": "Made public." } ], "credits": [ { "lang": "en", "value": "Red Hat would like to thank Jinbao Chen for reporting this issue." } ], "providerMetadata": { "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-10-07T17:41:38.164Z" }, "x_generator": { "engine": "cvelib 1.8.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-09-11T17:56:50.884605Z", "id": "CVE-2026-18495", "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": "2026-09-11T17:56:57.498Z" } } ] } }