CVE-2025-4918 - CVE House
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Status published Unknown CVE-2025-4918

Out-of-bounds access when resolving Promise objects

Vulnerability Description

An attacker was able to perform an out-of-bounds read or write on a JavaScript `Promise` object. This vulnerability was fixed in Firefox 138.0.4, Firefox ESR 128.10.1, Firefox ESR 115.23.1, Thunderbird 128.10.2, and Thunderbird 138.0.2.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Edouard Bochin and Tao Yan from Palo Alto Networks working with Trend Micro's Zero Day Initiative

References

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Affected Vendor

Affected Software

Firefox, Thunderbird
Vulnerable Versions:
115.23.1, 128.10.1, 138.0.4, 128.10.2, 138.0.2

Timeline

Official Publish: May 17th, 2025
Last Modified: April 13th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.