{"id":"CVE-2026-55256","title":"In parsePartHeaders of multiple files, there is a possible persistent denial of service due to improper input validation","summary":"In parsePartHeaders of multiple files, there is a possible persistent denial of service due to improper input validation. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-20"],"vendor":"google","product":"android","affected":["android = 14.0","android = 15.0","android = 16.0","android = 17.0"],"published":"2026-09-08","updated":"2026-09-24","sourceUpdated":"2026-09-24T15:42:54.473","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55256","references":[{"url":"https://source.android.com/docs/security/bulletin/2026/2026-09-01","label":"security@android.com"}],"tags":["nvd","cve.org"],"epss":0.00331,"epssPercentile":0.26165,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-10T15:40:12.250851Z"},"ingestedAt":"2026-09-08T19:08:49.641Z","slug":"CVE-2026-55256","body":"## Overview\n\nIn parsePartHeaders of multiple files, there is a possible persistent denial of service due to improper input validation. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.\n\n## Affected\n\n- `android = 14.0`\n- `android = 15.0`\n- `android = 16.0`\n- `android = 17.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":201775,"id":"CVE-2026-55256","ts":1789399705075,"field":"cvss","old":null,"new":"6.5"},{"seq":201774,"id":"CVE-2026-55256","ts":1789399705075,"field":"severity","old":"none","new":"medium"},{"seq":200505,"id":"CVE-2026-55256","ts":1789397361917,"field":"cvss","old":"6.5","new":null},{"seq":200504,"id":"CVE-2026-55256","ts":1789397361917,"field":"severity","old":"medium","new":"none"},{"seq":198422,"id":"CVE-2026-55256","ts":1789391950378,"field":"cvss","old":null,"new":"6.5"},{"seq":198421,"id":"CVE-2026-55256","ts":1789391950378,"field":"severity","old":"none","new":"medium"},{"seq":196215,"id":"CVE-2026-55256","ts":1789383564420,"field":"cvss","old":"6.5","new":null},{"seq":196214,"id":"CVE-2026-55256","ts":1789383564420,"field":"severity","old":"medium","new":"none"},{"seq":195144,"id":"CVE-2026-55256","ts":1789380462510,"field":"cvss","old":null,"new":"6.5"},{"seq":195143,"id":"CVE-2026-55256","ts":1789380462510,"field":"severity","old":"none","new":"medium"},{"seq":193931,"id":"CVE-2026-55256","ts":1789378483053,"field":"cvss","old":"6.5","new":null},{"seq":193930,"id":"CVE-2026-55256","ts":1789378483053,"field":"severity","old":"medium","new":"none"},{"seq":192718,"id":"CVE-2026-55256","ts":1789376394612,"field":"cvss","old":null,"new":"6.5"},{"seq":192717,"id":"CVE-2026-55256","ts":1789376394612,"field":"severity","old":"none","new":"medium"},{"seq":191505,"id":"CVE-2026-55256","ts":1789373385449,"field":"cvss","old":"6.5","new":null},{"seq":191504,"id":"CVE-2026-55256","ts":1789373385449,"field":"severity","old":"medium","new":"none"},{"seq":190290,"id":"CVE-2026-55256","ts":1789369282301,"field":"cvss","old":null,"new":"6.5"},{"seq":190289,"id":"CVE-2026-55256","ts":1789369282301,"field":"severity","old":"none","new":"medium"},{"seq":189077,"id":"CVE-2026-55256","ts":1789368252129,"field":"cvss","old":"6.5","new":null},{"seq":189076,"id":"CVE-2026-55256","ts":1789368252129,"field":"severity","old":"medium","new":"none"},{"seq":187860,"id":"CVE-2026-55256","ts":1789365138862,"field":"cvss","old":null,"new":"6.5"},{"seq":187859,"id":"CVE-2026-55256","ts":1789365138862,"field":"severity","old":"none","new":"medium"},{"seq":186647,"id":"CVE-2026-55256","ts":1789363238830,"field":"cvss","old":"6.5","new":null},{"seq":186646,"id":"CVE-2026-55256","ts":1789363238830,"field":"severity","old":"medium","new":"none"},{"seq":185433,"id":"CVE-2026-55256","ts":1789361087314,"field":"cvss","old":null,"new":"6.5"},{"seq":185432,"id":"CVE-2026-55256","ts":1789361087314,"field":"severity","old":"none","new":"medium"},{"seq":184220,"id":"CVE-2026-55256","ts":1789358122531,"field":"cvss","old":"6.5","new":null},{"seq":184219,"id":"CVE-2026-55256","ts":1789358122531,"field":"severity","old":"medium","new":"none"},{"seq":182471,"id":"CVE-2026-55256","ts":1789354212268,"field":"cvss","old":null,"new":"6.5"},{"seq":182470,"id":"CVE-2026-55256","ts":1789354212268,"field":"severity","old":"none","new":"medium"},{"seq":181264,"id":"CVE-2026-55256","ts":1789353106079,"field":"cvss","old":"6.5","new":null},{"seq":181263,"id":"CVE-2026-55256","ts":1789353106079,"field":"severity","old":"medium","new":"none"},{"seq":180057,"id":"CVE-2026-55256","ts":1789350157275,"field":"cvss","old":null,"new":"6.5"},{"seq":180056,"id":"CVE-2026-55256","ts":1789350157275,"field":"severity","old":"none","new":"medium"},{"seq":178850,"id":"CVE-2026-55256","ts":1789348069826,"field":"cvss","old":"6.5","new":null},{"seq":178849,"id":"CVE-2026-55256","ts":1789348069826,"field":"severity","old":"medium","new":"none"},{"seq":177643,"id":"CVE-2026-55256","ts":1789346268515,"field":"cvss","old":null,"new":"6.5"},{"seq":177642,"id":"CVE-2026-55256","ts":1789346268515,"field":"severity","old":"none","new":"medium"},{"seq":176436,"id":"CVE-2026-55256","ts":1789342990648,"field":"cvss","old":"6.5","new":null},{"seq":176435,"id":"CVE-2026-55256","ts":1789342990648,"field":"severity","old":"medium","new":"none"},{"seq":174553,"id":"CVE-2026-55256","ts":1789334756359,"field":"cvss","old":null,"new":"6.5"},{"seq":174552,"id":"CVE-2026-55256","ts":1789334756359,"field":"severity","old":"none","new":"medium"},{"seq":173348,"id":"CVE-2026-55256","ts":1789333480528,"field":"cvss","old":"6.5","new":null},{"seq":173347,"id":"CVE-2026-55256","ts":1789333480528,"field":"severity","old":"medium","new":"none"},{"seq":172162,"id":"CVE-2026-55256","ts":1789330990996,"field":"cvss","old":null,"new":"6.5"},{"seq":172161,"id":"CVE-2026-55256","ts":1789330990996,"field":"severity","old":"none","new":"medium"},{"seq":170976,"id":"CVE-2026-55256","ts":1789328591862,"field":"cvss","old":"6.5","new":null},{"seq":170975,"id":"CVE-2026-55256","ts":1789328591862,"field":"severity","old":"medium","new":"none"},{"seq":169771,"id":"CVE-2026-55256","ts":1789327043008,"field":"cvss","old":null,"new":"6.5"},{"seq":169770,"id":"CVE-2026-55256","ts":1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