Protection Mechanism Failure Affecting Firefox package, versions [,150.0)
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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- published26 Apr 2026
- disclosed21 Apr 2026
- creditb00rito
Introduced: 21 Apr 2026
CVE-2026-6777 (opens in a new tab)How to fix?
Upgrade Firefox to version 150.0 or higher.
Overview
Affected versions of this package are vulnerable to Protection Mechanism Failure in the DNS resolution process. An attacker can cause unexpected behavior or compromise the integrity of DNS queries by sending specially crafted network requests.