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Published: 02/02/2021 Updated: 26/03/2021

CVSS v2 Base Score: 6.8 | Impact Score: 6.4 | Exploitability Score: 8.6

CVSS v3 Base Score: 9.8 | Impact Score: 5.9 | Exploitability Score: 3.9

VMScore: 605

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

A stack overflow vulnerability in Facebook Hermes 'builtin apply' prior to commit 86543ac47e59c522976b5632b8bf9a2a4583c7d2 (github.com/facebook/hermes/commit/86543ac47e59c522976b5632b8bf9a2a4583c7d2) allows malicious users to potentially execute arbitrary code 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.

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facebook hermes

CWE-787 https://github.com/facebook/hermes/commit/86543ac47e59c522976b5632b8bf9a2a4583c7d2 https://www.facebook.com/security/advisories/cve-2020-1896 https://nvd.nist.gov

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CVE-2020-1896

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