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CVE-2022-35289

24
FAUCET Score

CVE-2022-35289 is a critical write-what-where vulnerability in Facebook Hermes, caused by an integer overflow that could allow arbitrary code execution through crafted JavaScript. With a CVSS score of 9.8, it presents a severe risk (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), meaning it can be exploited remotely with low complexity and no user interaction, leading to complete compromise of confidentiality, integrity, and availability. However, it is only exploitable if the application permits untrusted JavaScript evaluation, making most React Native applications unaffected. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.12.0CPE matchmatch criteria
cpe:2.3:a:facebook:hermes:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.93%
Probability of exploitation in next 30 days
EPSS Percentile
56.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0093 is in the 42nd percentile among its peer group of 36,897 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / facebook/hermes/commit/5b6255ae049fa4641791e47fad994e8e8c4da374
PatchThird Party Advisory
facebook.com / security/advisories/CVE-2022-35289
Vendor Advisory