{"schemaVersion":3,"id":"USN-7963-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"libpng1.6 vulnerabilities\n\nIt was discovered that the libpng simplified API incorrectly processed\npalette PNG images with partial transparency and gamma correction. If a\nuser or automated system were tricked into opening a specially crafted PNG\nfile, an attacker could use this issue to cause libpng to crash, resulting\nin a denial of service. (CVE-2025-66293)\n\nPetr Simecek, Stanislav Fort and Pavel Kohout discovered that the libpng\nsimplified API incorrectly processed interlaced 16-bit PNGs with 8-bit\noutput format and non-minimal row strides. If a user or automated system\nwere tricked into opening a specially crafted PNG file, an attacker could\nuse this issue to cause libpng to crash, resulting in a denial of service.\n(CVE-2026-22695)\n\nCosmin Truta discovered that the libpng simplified API incorrectly handled\ninvalid row strides. If a user or automated system were tricked into\nopening a specially crafted PNG file, an attacker could use this issue to\ncause libpng to crash, resulting in a denial of service. (CVE-2026-22801)","dates":{"published":"2026-01-14T16:45:48.000Z","modified":"2026-04-27T18:47:23.176Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"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":[],"affected":[{"vendor":"ubuntu","product":"libpng1.6","name":"libpng1.6","label":"libpng1.6","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/libpng1.6","purlType":"deb","versions":[{"text":"< 1.6.37-3ubuntu0.3","noFixRecorded":false,"fixedIn":null},{"text":"< 1.6.43-5ubuntu0.3","noFixRecorded":false,"fixedIn":null},{"text":"< 1.6.50-1ubuntu0.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.6.37-3ubuntu0.3 | < 1.6.43-5ubuntu0.3 | < 1.6.50-1ubuntu0.3","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-7963-1","label":"ubuntu.com/security/notices/USN-7963-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-66293","label":"ubuntu.com/security/CVE-2025-66293","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-22695","label":"ubuntu.com/security/CVE-2026-22695","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-22801","label":"ubuntu.com/security/CVE-2026-22801","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2025-66293","CVE-2026-22695","CVE-2026-22801"],"downstream":[],"duplicates":[],"related":["CVE-2025-66293","CVE-2026-22695","CVE-2026-22801"]},"timeline":[{"kind":"published","date":"2026-01-14T16:45:48.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-27T18:47:23.176Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T23:29:28.871Z","stale":false,"partial":false}}