Out-of-Bounds Affecting Firefox-ESR package, versions [,115.26)[128.0,128.13)[140.1-b1,140.1)
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-10914964
- published24 Jul 2025
- disclosed22 Jul 2025
- creditNan Wang
Introduced: 22 Jul 2025
NewCVE-2025-8027 (opens in a new tab)How to fix?
Upgrade Firefox-ESR to version 115.26, 128.13, 140.1 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-Bounds in the interaction between IonMonkey-JIT and Baseline-JIT processes. An attacker can potentially execute arbitrary code or cause a crash by exploiting the mismatch in how 64-bit return values are written and read on the stack.