{"id":"CVE-2019-3561","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-3561","generatedAt":"2026-10-27T23:42:01.757Z","title":"Insufficient boundary checks for the strrpos and strripos functions allow access to out-of-bounds memory.","description":"Insufficient boundary checks for the strrpos and strripos functions allow access to out-of-bounds memory. This affects all supported versions of HHVM (4.0.3, 3.30.4, and 3.27.7 and below).","published":"2019-04-29T16:29:01.000Z","lastModified":"2026-06-17T02:35:14.000Z","status":"Modified","sourceIdentifier":"cve-assign@fb.com","cvss":{"version":"3.0","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-119","CWE-125"],"affected":["facebook/hhvm"],"epss":{"score":0.01711,"percentile":0.77203,"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":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.71%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/facebook/hhvm/commit/46003b4ab564b2abcd8470035fc324fe36aa8c75","tags":["Third Party Advisory"],"source":"cve-assign@fb.com"},{"url":"https://hhvm.com/blog/2019/04/03/hhvm-4.0.4.html","tags":["Vendor Advisory"],"source":"cve-assign@fb.com"},{"url":"https://github.com/facebook/hhvm/commit/46003b4ab564b2abcd8470035fc324fe36aa8c75","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://hhvm.com/blog/2019/04/03/hhvm-4.0.4.html","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-3561","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."}