{"id":"CVE-2026-34155","aliases":["DEBIAN-CVE-2026-34155","EUVD-2026-17413","GHSA-6hj7-q844-m2hx","UBUNTU-CVE-2026-34155"],"status":"published","title":"RAUC: Improper Signing of Plain Bundles Exceeding 2 GiB","description":"RAUC controls the update process on embedded Linux systems. Prior to version 1.15.2, RAUC bundles using the 'plain' format exceeding a payload size of 2 GiB cause an integer overflow which results in a signature which covers only the first few bytes of the payload. Given such a bundle with a legitimate signature, an attacker can modify the part of the payload which is not covered by the signature. This issue has been patched in version 1.15.2.","severity":{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:H/VA:N/SC:H/SI:H/SA:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00146,"percentile":0.03929,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-196","CWE-347"],"published":"2026-03-31T13:28:14Z","modified":"2026-10-28T02:30:52Z","fixes":[{"ecosystem":"Debian:13","package":"rauc","fixed_in":["1.13-3+deb13u1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"rauc","fixed_in":["1.15.2-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"rauc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.1-1","1.10.1-2","1.11-1","1.11.3-1","1.11.3-2","1.12-1","1.13-1","1.13-2","1.13-3","1.14-1","1.15-1","1.15.1-1","1.15.2-1","1.8-2","1.9-1"]},{"source":"osv","ecosystem":"Debian:13","package":"rauc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.13-3+deb13u1"}]}],"versions":["1.13-3"]},{"source":"osv","ecosystem":"Debian:14","package":"rauc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.15.2-1"}]}],"versions":["1.13-3","1.14-1","1.15-1","1.15.1-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"rauc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1-2","1.2-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"rauc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.1-1","1.5.1-1build1","1.6-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"rauc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.1-1","1.10.1-2","1.11-1","1.11-1build3","1.11.3-2"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"rauc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.13-1","1.13-3"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"rauc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.15.1-1","1.15.2-1","1.15.2-1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"rauc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.13-3","1.14-1","1.15-1","1.15.1-1"]}],"products":[{"vendor":"pengutronix","product":"rauc"},{"vendor":"rauc","product":"rauc"}],"references":[{"url":"https://github.com/rauc/rauc/security/advisories/GHSA-6hj7-q844-m2hx","tags":["x_refsource_CONFIRM","Mitigation","Patch","Vendor Advisory","advisory","report"]},{"url":"https://github.com/rauc/rauc/commit/4fb7c798d6ae412344fb8f8d310d773046af3441","tags":["x_refsource_MISC","Patch","fix","report"]},{"url":"https://github.com/rauc/rauc/releases/tag/v1.15.2","tags":["x_refsource_MISC","Release Notes","web","report"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34155.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34155","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-34155","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-34155","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-34155","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-34155","title":"RAUC: Improper Signing of Plain Bundles Exceeding 2 GiB","description":"RAUC controls the update process on embedded Linux systems. Prior to version 1.15.2, RAUC bundles using the 'plain' format exceeding a payload size of 2 GiB cause an integer overflow which results in a signature which covers only the first few bytes of the payload. Given such a bundle with a legitimate signature, an attacker can modify the part of the payload which is not covered by the signature. This issue has been patched in version 1.15.2.","status":"published","published":"2026-03-31T13:28:14.863Z","modified":"2026-03-31T15:45:04.506Z","cvss":[{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:H/VA:N/SC:H/SI:H/SA:H","level":"high","assessor":"cna"}],"cwes":["CWE-196","CWE-347"],"updated_at":"2026-11-02T14:20:13.962274Z"}],"euvd":[{"id":"EUVD-2026-17413","description":"RAUC controls the update process on embedded Linux systems. Prior to version 1.15.2, RAUC bundles using the 'plain' format exceeding a payload size of 2 GiB cause an integer overflow which results in a signature which covers only the first few bytes of the payload. Given such a bundle with a legitimate signature, an attacker can modify the part of the payload which is not covered by the signature. This issue has been patched in version 1.15.2.","status":"published","published":"2026-03-31T13:28:14Z","modified":"2026-03-31T15:45:04Z","cvss":[{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:H/VA:N/SC:H/SI:H/SA:H","level":"high"}],"updated_at":"2026-11-02T19:25:24.891983Z"}],"nvd":[{"id":"CVE-2026-34155","description":"RAUC controls the update process on embedded Linux systems. Prior to version 1.15.2, RAUC bundles using the 'plain' format exceeding a payload size of 2 GiB cause an integer overflow which results in a signature which covers only the first few bytes of the payload. Given such a bundle with a legitimate signature, an attacker can modify the part of the payload which is not covered by the signature. This issue has been patched in version 1.15.2.","status":"published","published":"2026-03-31T14:16:11.997Z","modified":"2026-07-24T22:10:00.14Z","cvss":[{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:H/VA:N/SC:H/SI:H/SA:H/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","level":"high","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-196","CWE-347"],"updated_at":"2026-11-02T14:12:12.261218Z"}],"osv":[{"id":"CVE-2026-34155","title":"RAUC: Improper Signing of Plain Bundles Exceeding 2 GiB","description":"RAUC controls the update process on embedded Linux systems. Prior to version 1.15.2, RAUC bundles using the 'plain' format exceeding a payload size of 2 GiB cause an integer overflow which results in a signature which covers only the first few bytes of the payload. Given such a bundle with a legitimate signature, an attacker can modify the part of the payload which is not covered by the signature. This issue has been patched in version 1.15.2.","status":"published","published":"2026-03-31T13:28:14.863Z","modified":"2026-10-28T02:30:52.535958214Z","cvss":[{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:H/VA:N/SC:H/SI:H/SA:H","level":"high"}],"cwes":["CWE-196","CWE-347"],"updated_at":"2026-11-02T15:45:02.247031Z"},{"id":"DEBIAN-CVE-2026-34155","description":"RAUC controls the update process on embedded Linux systems. Prior to version 1.15.2, RAUC bundles using the 'plain' format exceeding a payload size of 2 GiB cause an integer overflow which results in a signature which covers only the first few bytes of the payload. Given such a bundle with a legitimate signature, an attacker can modify the part of the payload which is not covered by the signature. This issue has been patched in version 1.15.2.","status":"published","published":"2026-03-31T14:16:11.997Z","modified":"2026-10-01T03:02:37.81922775Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:54.587575Z"},{"id":"UBUNTU-CVE-2026-34155","description":"RAUC controls the update process on embedded Linux systems. Prior to version 1.15.2, RAUC bundles using the 'plain' format exceeding a payload size of 2 GiB cause an integer overflow which results in a signature which covers only the first few bytes of the payload. Given such a bundle with a legitimate signature, an attacker can modify the part of the payload which is not covered by the signature. This issue has been patched in version 1.15.2.","status":"published","published":"2026-03-31T14:16:00Z","modified":"2026-10-17T13:00:01.504524197Z","cvss":[{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:H/VA:N/SC:H/SI:H/SA:H","level":"high"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T16:56:16.036833Z"}]}}