{"schemaVersion":3,"id":"CVE-2026-25920","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"SumatraPDF is a multi-format reader for Windows. In 3.5.2 and earlier, a heap out-of-bounds read vulnerability exists in SumatraPDF's MOBI HuffDic decompressor. The bounds check in AddCdicData() only validates half the range that DecodeOne() actually accesses. Opening a crafted .mobi file can read nearly (1 << codeLength) bytes beyond the CDIC dictionary buffer, leading to a crash.","dates":{"published":"2026-02-09T21:32:26.520Z","modified":"2026-02-11T19:58:04.411Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.5,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":5.5,"severity":"medium","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.5,"severity":"medium","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00263,"percentile":0.17154,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0.03700000000000001,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.00226},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00229,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00229,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00229,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00229,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00235,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00235,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00235,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00235,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00235,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00235,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00235,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00235,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00235,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00263,"percentile":0.17154}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00229,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00229,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00229,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00229,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00235,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00235,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00235,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00235,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00235,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00235,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00235,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00235,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00235,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00263,"percentile":null},{"date":"2026-10-10T00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