CVE-2023-28081

moderate-risk
Published 2023-05-18

A bytecode optimization bug in Hermes prior to commit e6ed9c1a4b02dc219de1648f44cd808a56171b81 could be used to cause an use-after-free and obtain arbitrary code execution via a carefully crafted payload. Note that this is only exploitable in cases where Hermes is used to execute untrusted JavaScript. Hence, most React Native applications are not affected.

Do I need to act?

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0.58% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Facebook

References (4)

Patch https://github.com/facebook/hermes/commit/e6ed9c1a4b02dc219de1648f44cd808a56171b...
Patch https://www.facebook.com/security/advisories/cve-2023-28081
Patch https://github.com/facebook/hermes/commit/e6ed9c1a4b02dc219de1648f44cd808a56171b...
Patch https://www.facebook.com/security/advisories/cve-2023-28081
39
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 2/34 · Minimal
Exposure 5/34 · Minimal