CVE-2025-9182

HIGH
Published Aug 19, 2025 Modified Apr 13, 2026 CWE-400

Description

Denial-of-service due to out-of-memory in the Graphics: WebRender component. This vulnerability was fixed in Firefox 142, Firefox ESR 140.2, Thunderbird 142, and Thunderbird 140.2.

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CVSS v3.1 Score

7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-400 Uncontrolled Resource Consumption

Affected Products

Vendor Product
mozilla firefox
mozilla firefox
mozilla thunderbird
mozilla thunderbird

References

Frequently Asked Questions

What is CVE-2025-9182? +
Denial-of-service due to out-of-memory in the Graphics: WebRender component. This vulnerability was fixed in Firefox 142, Firefox ESR 140.2, Thunderbird 142, and Thunderbird 140.2. It has a CVSS v3.1 base score of 7.5 (HIGH).
How severe is CVE-2025-9182? +
CVE-2025-9182 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2025-9182? +
CVE-2025-9182 affects products from mozilla, specifically: firefox, thunderbird. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2025-9182? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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