CVE-2025-9180

Name: CVE-2025-9180
Creator: NVD / NIST
Published: 2025-08-19T21:15:30.39+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 0.23%

Last modified Jun 17, 2026

CVE-2025-9180 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. Same-origin policy bypass in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 142, Firefox ESR 115.27, Firefox ESR 128.14, Firefox ESR 140.2, Thunderbird 142, Thunderbird 128.14, and Thunderbird 140.2.. EPSS estimates a 0.23% chance of exploitation in the next 30 days.

Description

Same-origin policy bypass in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 142, Firefox ESR 115.27, Firefox ESR 128.14, Firefox ESR 140.2, Thunderbird 142, Thunderbird 128.14, and Thunderbird 140.2.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

0.23%

13.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-346

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 115.27.0
Mozilla	Firefox	< 142.0
Mozilla	Firefox	>= 128.0, < 128.14.0
Mozilla	Firefox	>= 140.0, < 140.2.0
Mozilla	Thunderbird	< 128.14.0
Mozilla	Thunderbird	< 142.0
Mozilla	Thunderbird	>= 140.0, < 140.2.0

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1979782Issue Tracking, Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-64/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-65/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-66/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-67/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-70/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-71/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-72/Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/08/msg00016.html
https://lists.debian.org/debian-lts-announce/2025/08/msg00018.html

Timeline

Published: Aug 19, 2025
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2025-9180?

How severe is CVE-2025-9180?

CVE-2025-9180 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.

How do I fix CVE-2025-9180?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-9180?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST