Out-of-Bounds Affecting Firefox-ESR package, versions [,115.39)[116.0,140.14)[141.0,153.1)
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-UNMANAGED-FIREFOXESR-19427562
- published29 Aug 2026
- disclosed18 Aug 2026
- creditUnknown
Introduced: 18 Aug 2026
NewCVE-2026-74990 (opens in a new tab)How to fix?
Upgrade Firefox-ESR to version 115.39, 140.14, 153.1 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-Bounds due to memory corruption or other security-relevant defects in the underlying process. An attacker can potentially execute arbitrary code or cause a crash by leveraging crafted input to trigger these defects.