Vulnerability in Facebook Hermes
CVE-2022-40138
An integer conversion error in Hermes bytecode generation, prior to commit 6aa825e480d48127b480b08d13adf70033237097, could have been used to perform Out-Of-Bounds operations and subsequently execute arbitrary code. Note that this is only exploitable in cases where Hermes is used to execute untrusted JavaScript. Hence, most React Native applications are not affected.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.012 (67.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.012 · change: +0.002
Affected products
- Facebook Hermes — versions unspecified
Weakness classification (CWE)
References
- github.com/facebook/hermes/commit/6aa825e480d48127b480b08d13adf70033237097 (Patch, Third Party Advisory)
- www.facebook.com/security/advisories/CVE-2022-40138 (Vendor Advisory)
Frequently asked questions
- What is CVE-2022-40138?
- CVE-2022-40138 is a critical-severity vulnerability in Facebook Hermes, classified under Incorrect Conversion between Numeric Types. CVSS score: 9.8/10. Published 2022-10-11.
- How severe is CVE-2022-40138?
- Critical severity. CVSS v3 base score is 9.8 out of 10.