{"id":"CVE-2026-58956","aliases":["A-461507723","ASB-A-461507723","EUVD-2026-115395","GHSA-xw9j-cc7f-69wg"],"status":"published","title":"In modpowF4 of avb_rsa.c, there is a possible signature verification bypass due to a logic error...","description":"In modpowF4 of avb_rsa.c, there is a possible signature verification bypass due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.","severity":{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00086,"percentile":0.00303,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-693"],"published":"2026-11-01T00:00:00Z","modified":"2026-11-10T17:39:02Z","fixes":[{"ecosystem":"Android","package":"platform/external/avb","fixed_in":["17-qpr2-next:2026-11-01","15:2026-11-01","16:2026-11-01","16-qpr2:2026-11-01","17:2026-11-01","14:2026-11-01"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Android","package":"platform/external/avb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"17-qpr2-next:0"},{"fixed":"17-qpr2-next:2026-11-01"}]}],"versions":["17-qpr2-next"]},{"source":"osv","ecosystem":"Android","package":"platform/external/avb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"15:0"},{"fixed":"15:2026-11-01"}]}],"versions":["15"]},{"source":"osv","ecosystem":"Android","package":"platform/external/avb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"16:0"},{"fixed":"16:2026-11-01"}]}],"versions":["16"]},{"source":"osv","ecosystem":"Android","package":"platform/external/avb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"16-qpr2:0"},{"fixed":"16-qpr2:2026-11-01"}]}],"versions":["16-qpr2"]},{"source":"osv","ecosystem":"Android","package":"platform/external/avb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"17:0"},{"fixed":"17:2026-11-01"}]}],"versions":["17"]},{"source":"osv","ecosystem":"Android","package":"platform/external/avb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"14:0"},{"fixed":"14:2026-11-01"}]}],"versions":["14"]}],"products":[{"vendor":"google","product":"android"}],"references":[{"url":"https://source.android.com/docs/security/bulletin/2026/2026-11-01","tags":["Vendor Advisory","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58956"},{"url":"https://github.com/advisories/GHSA-xw9j-cc7f-69wg"},{"url":"https://source.android.com/security/bulletin/2026-11-01","tags":["advisory"]},{"url":"https://android.googlesource.com/platform/external/avb/+/119d66ea37241def63e715658ac02c414bd3d0e5","tags":["fix"]}],"sources":{"cve":[{"id":"CVE-2026-58956","description":"In modpowF4 of avb_rsa.c, there is a possible signature verification bypass due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.","status":"published","published":"2026-11-02T19:54:22.071Z","modified":"2026-11-04T04:56:06.116Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-693"],"updated_at":"2026-11-04T05:21:48.223566Z"}],"euvd":[{"id":"EUVD-2026-115395","description":"In modpowF4 of avb_rsa.c, there is a possible signature verification bypass due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.","status":"published","published":"2026-11-02T19:54:22Z","modified":"2026-11-04T04:56:06Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-04T07:00:57.274021Z"}],"ghsa":[{"id":"GHSA-xw9j-cc7f-69wg","title":"In modpowF4 of avb_rsa.c, there is a possible signature verification bypass due to a logic error...","description":"In modpowF4 of avb_rsa.c, there is a possible signature verification bypass due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.","status":"published","published":"2026-11-02T21:32:02Z","modified":"2026-11-03T21:33:04Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-693"],"updated_at":"2026-11-03T21:34:09.995382Z"}],"nvd":[{"id":"CVE-2026-58956","description":"In modpowF4 of avb_rsa.c, there is a possible signature verification bypass due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.","status":"published","published":"2026-11-02T20:17:52.167Z","modified":"2026-11-10T17:39:02.26Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-693"],"updated_at":"2026-11-10T20:21:07.996674Z"}],"osv":[{"id":"ASB-A-461507723","description":"In modpowF4 of avb_rsa.c, there is a possible signature verification bypass due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.","status":"published","published":"2026-11-01T00:00:00Z","modified":"2026-11-10T17:02:23.040266809Z","updated_at":"2026-11-10T17:35:07.135383Z"}]}}