Out-of-Bounds Affecting Firefox package, versions [,149.0.2)
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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- published8 Apr 2026
- disclosed7 Apr 2026
- creditUnknown
Introduced: 7 Apr 2026
CVE-2026-5735 (opens in a new tab)How to fix?
Upgrade Firefox to version 149.0.2 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-Bounds due to improper memory management. An attacker can execute arbitrary code or cause a crash by triggering memory corruption through crafted input.
PoC
Firefox < 149.0.2 and Thunderbird < 149.0.2.