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CVE-2020-1913

HIGH
8.1
CVSS Score
Published: September 9, 2020 at 07:00 PM UTC
Updated: June 17, 2026 at 03:02 AM UTC
1 product affected across 1 vendorHermes

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Severity
HIGH8.1
Exploit prediction
EPSS 1%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Hermes· Facebook
95%
v ≤ 0.4.3

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_CONFIRMPatchThird Party Advisory
Source: [email protected]
https://github.com/facebook/hermes/commit/2c7af7ec481ceffd0d14ce2d7c045e475fd71dc6
x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://www.facebook.com/security/advisories/cve-2020-1913

CVSS

8.1HIGH[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-195CWE-681

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