{"cve":"CVE-2020-1915","nvd":{"published":"2020-10-26T21:15:12.193","modified":"2026-06-17T03:02:36.463","status":"Modified","description":"An out-of-bounds read in the JavaScript Interpreter in Facebook Hermes prior to commit 8cb935cd3b2321c46aa6b7ed8454d95c75a7fca0 allows attackers to cause a denial of service attack or possible further memory corruption via crafted JavaScript. Note that this is only exploitable if the application using Hermes permits evaluation of untrusted JavaScript. Hence, most React Native applications are not affected.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-125"],"references":["https://github.com/facebook/hermes/commit/8cb935cd3b2321c46aa6b7ed8454d95c75a7fca0","https://www.facebook.com/security/advisories/cve-2020-1915","https://github.com/facebook/hermes/commit/8cb935cd3b2321c46aa6b7ed8454d95c75a7fca0","https://www.facebook.com/security/advisories/cve-2020-1915"],"products":["facebook:hermes"],"source":"nvd","synced_at":"2026-10-19T21:09:53.489947993+00:00"},"epss":{"cve":"CVE-2020-1915","score":0.01603,"percentile":0.75837,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-x4cf-6jr3-3qvp","url":"https://osv.dev/vulnerability/GHSA-x4cf-6jr3-3qvp","summary":"Out-of-bounds Read in Facebook Hermes","modified":"2023-11-08T04:02:45.314604Z","packages":[{"ecosystem":"npm","name":"hermes-engine","purl":"pkg:npm/hermes-engine","ranges":["<0.7.2"],"fixed":["0.7.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}