{"id":"CVE-2017-2784","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-2784","generatedAt":"2026-10-28T22:11:20.676Z","title":"An exploitable free of a stack pointer vulnerability exists in the x509 certificate parsing code of ARM mbed TLS before 1.3.19, 2.x before 2.1.7, and 2.4.x before 2.4.2.","description":"An exploitable free of a stack pointer vulnerability exists in the x509 certificate parsing code of ARM mbed TLS before 1.3.19, 2.x before 2.1.7, and 2.4.x before 2.4.2. A specially crafted x509 certificate, when parsed by mbed TLS library, can cause an invalid free of a stack pointer leading to a potential remote code execution. In order to exploit this vulnerability, an attacker can act as either a client or a server on a network to deliver malicious x509 certificates to vulnerable applications.","published":"2017-04-20T18:59:02.000Z","lastModified":"2026-06-17T01:16:50.000Z","status":"Modified","sourceIdentifier":"talos-cna@cisco.com","cvss":{"version":"3.0","score":8.1,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-295"],"affected":["trustedfirmware/mbed tls"],"epss":{"score":0.03418,"percentile":0.88832,"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 (3.42%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://www.talosintelligence.com/reports/TALOS-2017-0274/","tags":["Exploit","Technical Description","Third Party Advisory","VDB Entry"],"source":"talos-cna@cisco.com"},{"url":"https://security.gentoo.org/glsa/201706-18","source":"talos-cna@cisco.com"},{"url":"https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2017-01","tags":["Mitigation","Vendor Advisory"],"source":"talos-cna@cisco.com"},{"url":"http://www.talosintelligence.com/reports/TALOS-2017-0274/","tags":["Exploit","Technical Description","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/201706-18","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2017-01","tags":["Mitigation","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-2784","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."}