7.5

CVE-2020-1915: facebook hermes Out-of-bounds Read

CVSS: 7.5v3.1HighModified
AliasesGHSA-x4cf-6jr3-3qvp
Published 26-10-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-1915 is a high (CVSS 7.5) Out-of-bounds Read vulnerability in facebook hermes. EPSS estimates a 1.60% chance of exploitation in the next 30 days, higher than 75.4% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.60%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 26-10-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.60%

Chance of exploitation in the next 30 days

Percentile

75%

Versus all other CVEs

30-day change

0.00 pp

From 1.60% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.60%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Facebook1 product
  • hermescommit prior to 8cb935cd3b2321c46aa6b7ed8454d95c75a7fca0 | < 2020-09-25
Npm1 product
  • hermes-engine< 0.7.2

2 vendors · 2 products

References

5 links