{"id":"CVE-2020-13595","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-13595","generatedAt":"2026-10-28T00:53:51.725Z","title":"An attacker within radio range can silently trigger the assertion (which disables the target's BLE stack) by sending a crafted sequence of BLE packets.","description":"The Bluetooth Low Energy (BLE) controller implementation in Espressif ESP-IDF 4.0 through 4.2 (for ESP32 devices) returns the wrong number of completed BLE packets and triggers a reachable assertion on the host stack when receiving a packet with an MIC failure. An attacker within radio range can silently trigger the assertion (which disables the target's BLE stack) by sending a crafted sequence of BLE packets.","published":"2020-08-31T15:15:11.000Z","lastModified":"2026-06-17T02:53:26.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-617"],"affected":["espressif/esp-idf"],"epss":{"score":0.0087,"percentile":0.58545,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.87%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://asset-group.github.io/cves.html","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://asset-group.github.io/disclosures/sweyntooth/","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/espressif/esp32-bt-lib","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://asset-group.github.io/cves.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://asset-group.github.io/disclosures/sweyntooth/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/espressif/esp32-bt-lib","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-13595","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."}