Out-of-bounds Read in Facebook Hermes
CVE-2020-1915
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.016 (75.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
- Facebook Hermes — versions commit prior to 8cb935cd3b2321c46aa6b7ed8454d95c75a7fca0
Weakness classification (CWE)
References
- www.facebook.com/security/advisories/cve-2020-1915 (Vendor Advisory)
- github.com/facebook/hermes/commit/8cb935cd3b2321c46aa6b7ed8454d95c75a7fca0 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-1915?
- CVE-2020-1915 is a high-severity vulnerability in Facebook Hermes, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2020-10-26.
- How severe is CVE-2020-1915?
- High severity. CVSS v3 base score is 7.5 out of 10.