{"id":"CVE-2020-13844","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-13844","generatedAt":"2026-10-28T04:17:43.952Z","title":"Arm Armv8-A core implementations utilizing speculative execution past unconditional changes in control flow may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis, aka \"straight-line…","description":"Arm Armv8-A core implementations utilizing speculative execution past unconditional changes in control flow may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis, aka \"straight-line speculation.\"","published":"2020-06-08T23:15:10.000Z","lastModified":"2026-06-17T02:53:46.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-203"],"affected":["arm/cortex-a32 firmware","arm/cortex-a35 firmware","arm/cortex-a53 firmware","arm/cortex-a57 firmware","arm/cortex-a72 firmware","arm/cortex-a73 firmware","arm/cortex-a34 firmware","opensuse/leap"],"epss":{"score":0.00508,"percentile":0.43166,"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":"low","text":"Lower severity and a low EPSS score (0.51%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://lists.llvm.org/pipermail/llvm-dev/2020-June/142109.html","tags":["Mailing List","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00039.html","tags":["Mailing List","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00040.html","tags":["Mailing List","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability/downloads/straight-line-speculation","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability/frequently-asked-questions","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://gcc.gnu.org/pipermail/gcc-patches/2020-June/547520.html","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://lists.llvm.org/pipermail/llvm-dev/2020-June/142109.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00039.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00040.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability/downloads/straight-line-speculation","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability/frequently-asked-questions","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gcc.gnu.org/pipermail/gcc-patches/2020-June/547520.html","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-13844","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."}