Vulnerability in Facebook Hermes
CVE-2020-1913
An Integer signedness error in the JavaScript Interpreter in Facebook Hermes prior to commit 2c7af7ec481ceffd0d14ce2d7c045e475fd71dc6 allows attackers to cause a denial of service attack or a potential RCE 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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.012 (68.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Facebook Hermes — versions commit prior to 2c7af7ec481ceffd0d14ce2d7c045e475fd71dc6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.facebook.com/security/advisories/cve-2020-1913 (Vendor Advisory)
- github.com/facebook/hermes/commit/2c7af7ec481ceffd0d14ce2d7c045e475fd71dc6 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-1913?
- CVE-2020-1913 is a high-severity vulnerability in Facebook Hermes, classified under CWE-195. CVSS score: 8.1/10. Published 2020-09-09.
- How severe is CVE-2020-1913?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2020-1913 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.