CVE-2025-49709 Affecting firefox package, versions <139.0.4-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CHAINGUARDLATEST-FIREFOX-10361601
- published16 Jun 2025
- disclosed11 Jun 2025
Introduced: 11 Jun 2025
NewCVE-2025-49709 (opens in a new tab)How to fix?
Upgrade Chainguard firefox to version 139.0.4-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Chainguard.
See How to fix? for Chainguard relevant fixed versions and status.
Certain canvas operations could have lead to memory corruption. This vulnerability affects Firefox < 139.0.4.