{"id":"CVE-2019-11922","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-11922","generatedAt":"2026-10-29T00:58:39.863Z","title":"A race condition in the one-pass compression functions of Zstandard prior to version 1.3.8 could allow an attacker to write bytes out of bounds if an output buffer smaller than the recommended size was used.","description":"A race condition in the one-pass compression functions of Zstandard prior to version 1.3.8 could allow an attacker to write bytes out of bounds if an output buffer smaller than the recommended size was used.","published":"2019-07-25T21:15:12.000Z","lastModified":"2026-06-17T02:13:50.000Z","status":"Modified","sourceIdentifier":"cve-assign@fb.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-362"],"affected":["facebook/zstandard"],"epss":{"score":0.01419,"percentile":0.72662,"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 (1.42%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00008.html","source":"cve-assign@fb.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00062.html","source":"cve-assign@fb.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00078.html","source":"cve-assign@fb.com"},{"url":"https://github.com/facebook/zstd/pull/1404/commits/3e5cdf1b6a85843e991d7d10f6a2567c15580da0","tags":["Patch","Third Party Advisory"],"source":"cve-assign@fb.com"},{"url":"https://usn.ubuntu.com/4108-1/","source":"cve-assign@fb.com"},{"url":"https://www.facebook.com/security/advisories/cve-2019-11922","tags":["Vendor Advisory"],"source":"cve-assign@fb.com"},{"url":"https://www.oracle.com/security-alerts/cpuoct2020.html","source":"cve-assign@fb.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00008.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00062.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00078.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/facebook/zstd/pull/1404/commits/3e5cdf1b6a85843e991d7d10f6a2567c15580da0","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/4108-1/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.facebook.com/security/advisories/cve-2019-11922","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/security-alerts/cpuoct2020.html","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-11922","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."}