CVE-2025-1011

Description

A bug in WebAssembly code generation could have lead to a crash. It may have been possible for an attacker to leverage this to achieve code execution. This vulnerability affects Firefox < 135, Firefox ESR < 128.7, Thunderbird < 128.7, and Thunderbird < 135.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.10%
Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Affected: Mozilla Firefox ESR
Affected: Mozilla Thunderbird
Affected: Mozilla Thunderbird
Published at:
Updated at:

References

Link Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1936454 permissions required
https://www.mozilla.org/security/advisories/mfsa2025-07/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2025-09/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2025-10/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2025-11/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2025-1011?
CVE-2025-1011 has been scored as a high severity vulnerability.
How to fix CVE-2025-1011?
To fix CVE-2025-1011, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-1011 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-1011 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-1011?
CVE-2025-1011 affects Mozilla Firefox, Mozilla Firefox ESR, Mozilla Thunderbird, Mozilla Thunderbird.
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