{"id":"CVE-2026-88361","title":"SumatraPDF 3.6.1 contains an integer overflow vulnerability in EngineMupdf::BuildPageLabelRec() when parsing PDF PageLabels /Nums entries.","summary":"SumatraPDF 3.6.1 contains an integer overflow vulnerability in EngineMupdf::BuildPageLabelRec() when parsing PDF PageLabels /Nums entries.","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-190"],"published":"2026-09-24","updated":"2026-09-25","sourceUpdated":"2026-09-25T18:17:31.423","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-88361","references":[{"url":"https://github.com/chenjiefeng2001/sumatrapdf_folked/commit/b22a8c71ddc9de80ece5f88d14b434c20fee912e","label":"cve@mitre.org"},{"url":"https://github.com/haimag/sumatrapdf/commit/8b999ff1bf0a8df244e75440682a3fd9a038eb2d","label":"cve@mitre.org"},{"url":"https://github.com/sumatrapdfreader/sumatrapdf/issues/5952","label":"cve@mitre.org"},{"url":"https://github.com/sumatrapdfreader/sumatrapdf/issues/5952","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-25T18:05:40.308342Z"},"ingestedAt":"2026-09-24T15:45:56.664Z","epss":0.00166,"epssPercentile":0.05163,"slug":"CVE-2026-88361","body":"## Overview\n\nSumatraPDF 3.6.1 contains an integer overflow vulnerability in EngineMupdf::BuildPageLabelRec() when parsing PDF PageLabels /Nums entries.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":211120,"id":"CVE-2026-88361","ts":1790360112805,"field":"exploit_available","old":"false","new":"true"},{"seq":211119,"id":"CVE-2026-88361","ts":1790360112805,"field":"cvss","old":null,"new":"7.5"},{"seq":211118,"id":"CVE-2026-88361","ts":1790360112805,"field":"severity","old":"none","new":"high"}]}