Vulnerability Intelligence Report
CVE-2023-23557
An error in Hermes' algorithm for copying objects properties prior to commit a00d237346894c6067a594983be6634f4168c9ad could be used by a malicious attacker to execute arbitrary code via type confusion. Note that this is only exploitable in cases where Hermes is used to execute untrusted JavaScript. Hence, most React Native applications are not affected.
No Active Exploit Signals
CVSS Base Score
9.8
CRITICAL
Exploitability:3.9
Impact Score:5.9
EPSS Probability:0.89%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-843 ↗CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Hermes | 0 < a00d237346894c6067a594983be6634f4168c9ad (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.891%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | |
| Reserved | 2023-01-12T23:36:42 |
| Published | 2023-05-18T21:19:41 |
| Last Updated | 2025-01-21T21:20:13 |
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