Description

Setting a nameless cookie with an equals sign in the value shadowed other cookies. Even if the nameless cookie was set over HTTP and the shadowed cookie included the `Secure` attribute. This vulnerability was fixed in Firefox 141, Firefox ESR 140.1, Thunderbird 141, and Thunderbird 140.1.

INFO

Published Date :

2025-07-22T20:49:25.621Z

Last Modified :

2026-04-13T14:26:53.773Z

Source :

mozilla
AFFECTED PRODUCTS

The following products are affected by CVE-2025-8037 vulnerability.

Vendors Products
Mozilla
  • Firefox
  • Firefox Esr
  • Thunderbird
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-8037.

URL Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1964767 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-8037 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-8037 cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-56/ cve-icon cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-59/ cve-icon cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-61/ cve-icon cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-63/ cve-icon cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact