{"id":"CVE-2026-2540","aliases":["EUVD-2026-5831","GHSA-822c-h5gx-7pw7"],"status":"published","title":"Micca KE700 Acceptance of previously used rolling codes","description":"The Micca KE700 system contains flawed resynchronization logic and is vulnerable to replay attacks. This attack requires sending two previously captured codes in a specific sequence. As a result, the system can be forced to accept previously used (stale) rolling codes and execute a command. Successful exploitation allows an attacker to clone the alarm key. This grants the attacker unauthorized access to the vehicle to unlock or lock the doors.","severity":{"version":"4.0","score":8.4,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:L/SI:L/SA:H/V:D/RE:M","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00217,"percentile":0.12309,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-288","CWE-294"],"published":"2026-02-15T11:03:26Z","modified":"2026-06-17T10:31:16Z","products":[{"vendor":"micca auto electronics co., ltd.","product":"car alarm system ke700"}],"references":[{"url":"https://asrg.io/security-advisories/cve-2026-2540/","tags":["third-party-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-2540"},{"url":"https://asrg.io/security-advisories/cve-2026-2540"},{"url":"https://github.com/advisories/GHSA-822c-h5gx-7pw7"}],"sources":{"cve":[{"id":"CVE-2026-2540","title":"Micca KE700 Acceptance of previously used rolling codes","description":"The Micca KE700 system contains flawed resynchronization logic and is vulnerable to replay attacks. This attack requires sending two previously captured codes in a specific sequence. As a result, the system can be forced to accept previously used (stale) rolling codes and execute a command. Successful exploitation allows an attacker to clone the alarm key. This grants the attacker unauthorized access to the vehicle to unlock or lock the doors.","status":"published","published":"2026-02-15T11:03:26.051Z","modified":"2026-02-17T17:06:53.98Z","cvss":[{"version":"4.0","score":8.4,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:L/SI:L/SA:H/V:D/RE:M","level":"high","assessor":"cna"}],"cwes":["CWE-288","CWE-294"],"updated_at":"2026-11-02T13:48:35.749498Z"}],"euvd":[{"id":"EUVD-2026-5831","description":"The Micca KE700 system contains flawed resynchronization logic and is vulnerable to replay attacks. This attack requires sending two previously captured codes in a specific sequence. As a result, the system can be forced to accept previously used (stale) rolling codes and execute a command. Successful exploitation allows an attacker to clone the alarm key. This grants the attacker unauthorized access to the vehicle to unlock or lock the doors.","status":"published","published":"2026-02-15T11:03:26Z","modified":"2026-02-17T17:06:53Z","cvss":[{"version":"4.0","score":8.4,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:L/SI:L/SA:H/V:D/RE:M","level":"high"}],"updated_at":"2026-11-02T19:48:37.939014Z"}],"ghsa":[{"id":"GHSA-822c-h5gx-7pw7","title":"The Micca KE700 system contains flawed resynchronization logic and is vulnerable to replay...","description":"The Micca KE700 system contains flawed resynchronization logic and is vulnerable to replay attacks. This attack requires sending two previously captured codes in a specific sequence. As a result, the system can be forced to accept previously used (stale) rolling codes and execute a command. Successful exploitation allows an attacker to clone the alarm key. This grants the attacker unauthorized access to the vehicle to unlock or lock the doors.","status":"published","published":"2026-02-15T12:30:25Z","modified":"2026-02-15T12:30:25Z","cvss":[{"version":"4.0","score":8.4,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:L/SI:L/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:D/RE:M/U:X","level":"high"}],"cwes":["CWE-288"],"updated_at":"2026-11-02T15:06:13.022126Z"}],"nvd":[{"id":"CVE-2026-2540","description":"The Micca KE700 system contains flawed resynchronization logic and is vulnerable to replay attacks. This attack requires sending two previously captured codes in a specific sequence. As a result, the system can be forced to accept previously used (stale) rolling codes and execute a command. Successful exploitation allows an attacker to clone the alarm key. This grants the attacker unauthorized access to the vehicle to unlock or lock the doors.","status":"published","published":"2026-02-15T11:15:55.07Z","modified":"2026-06-17T10:31:16.51Z","cvss":[{"version":"4.0","score":8.4,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:L/SI:L/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:D/RE:M/U:X","level":"high","assessor":"secondary"}],"cwes":["CWE-288","CWE-294"],"updated_at":"2026-11-02T14:12:05.908608Z"}]}}