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Findings

CVE-2026-6777

Other issue in the Networking: DNS component.

Published Apr 21, 2026 · updated Jun 17, 2026 · mozilla firefox

Other issue in the Networking: DNS component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 21, 2026 · NIST NVD

    Detected

    Other issue in the Networking: DNS component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.

  2. Jun 17, 2026 · NIST NVD

    Updated

    Other issue in the Networking: DNS component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.

Affected

  • cpe mozilla/firefoxversion unspecified
  • cpe mozilla/thunderbirdversion unspecified

Sources

  • CVE.orgVulnerability recordCVE-2026-6777

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2026-6777

    Other issue in the Networking: DNS component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.

    nvd.nist.gov

References