Integer Overflow or Wraparound Affecting Firefox package, versions [,139.0.4)
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-FIREFOX-10380569
- published18 Jun 2025
- disclosed11 Jun 2025
- creditShaheen Fazim
Introduced: 11 Jun 2025
NewCVE-2025-49710 (opens in a new tab)How to fix?
Upgrade Firefox to version 139.0.4 or higher.
Overview
Affected versions of this package are vulnerable to Integer Overflow or Wraparound due to an integer overflow in the OrderedHashTable used by the JavaScript engine. An attacker can execute arbitrary code or cause a crash by supplying crafted input that triggers the overflow.