{"id":"CVE-2025-14859","url":"https://www.cyber-defence.io/tools/cve/CVE-2025-14859","generatedAt":"2026-10-28T03:41:28.677Z","title":"However, the implementation uses a non-standard cryptographic hashing algorithm that is vulnerable to second preimage attacks.","description":"The Semtech LR11xx LoRa transceivers implement secure boot functionality using digital signatures to authenticate firmware. However, the implementation uses a non-standard cryptographic hashing algorithm that is vulnerable to second preimage attacks. An attacker with physical access to the device can exploit this weakness to generate a malicious firmware image with a hash collision, bypassing the secure boot verification mechanism and installing arbitrary unauthorized firmware on the device.","published":"2026-04-07T20:16:23.000Z","lastModified":"2026-07-24T23:10:01.000Z","status":"Awaiting Analysis","sourceIdentifier":"security@sierrawireless.com","cvss":{"version":"4.0","score":7,"severity":"HIGH","vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-327"],"affected":[],"epss":{"score":0.0011,"percentile":0.01248,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.11%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://www.semtech.com/company/security/security-bulletins/sem-psa-2026-001","source":"security@sierrawireless.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-14859","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}