{"schemaVersion":3,"id":"CVE-2026-107735","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"SumatraPDF is a multi-format reader for Windows. In 3.6.1 and earlier, InitializePolicies() starts the sumatrapdfrestrict.ini path with gPolicyRestrictions set to Perm::All and only ORs permission bits, so the INI file never revokes permissions. Deploying SumatraPDF with this INI file, including a malformed file or zero-valued permission settings, can silently bypass configured disk, network, printing, registry, clipboard, preference, and fullscreen restrictions. The -restrict command-line path works correctly and is not affected. No fixed version is available as of this review.","dates":{"published":"2026-10-08T22:26:00.405Z","modified":"2026-10-09T15:24:14.433Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.4,"severity":"medium","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":5.4,"severity":"medium","vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":5.4,"severity":"medium","vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00113,"percentile":0.01368,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-09T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00113,"percentile":0.01368}],"last30":[{"date":"2026-10-09T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00113,"percentile":0.01368}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-636","name":"Not Failing Securely ('Failing Open')","description":"When the product encounters an error condition or failure, its design requires it to fall back to a state that is less secure than other options that are available, such as selecting the weakest encryption algorithm or using the most permissive access control restrictions.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/636.html"}],"affected":[{"vendor":"sumatrapdfreader","product":"sumatrapdf","name":"sumatrapdf","label":"sumatrapdf","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 3.6.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 3.6.1","eol":null,"hubHref":"/vendor/sumatrapdfreader/sumatrapdf"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-crhm-w5qr-wjj4","label":"github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-crhm-w5qr-wjj4","hostname":"github.com","tags":["X Refsource CONFIRM"]},{"url":"https://github.com/sumatrapdfreader/sumatrapdf/commit/f72948b59405d3ddba527789898050ef411d0bb8","label":"github.com/sumatrapdfreader/sumatrapdf/commit/f72948b59405d3ddba527789898050ef411d0bb8","hostname":"github.com","tags":["X Refsource MISC"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-08T22:26:00.405Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-09T15:24:14.433Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":22,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T12:13:32.868Z","stale":false,"partial":false}}