CVE-2026-6767
Received Received - Intake
Memory Corruption Vulnerability in NSS Libraries Affecting Firefox

Publication date: 2026-04-21

Last updated on: 2026-04-22

Assigner: Mozilla Corporation

Description
Other issue in the Libraries component in NSS. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
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Meta Information
Published
2026-04-21
Last Modified
2026-04-22
Generated
2026-06-16
AI Q&A
2026-04-21
EPSS Evaluated
2026-06-14
NVD
CVE-2026-6767
EUVD
EUVD-2026-24108
Affected Vendors & Products
Showing 4 associated CPEs
Vendor Product Version / Range
mozilla firefox to 150.0 (exc)
mozilla firefox to 115.35.0 (exc)
mozilla firefox From 140.0 (inc) to 140.10.0 (exc)
mozilla thunderbird From 140.0 (inc) to 140.10.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-119 The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
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Mitigation Strategies

To mitigate this vulnerability, update Firefox to version 150 or later, or update Firefox ESR to versions 115.35 or 140.10 or later where the issue has been fixed.

Executive Summary

This vulnerability is an unspecified issue in the Libraries component of NSS (Network Security Services) used by Mozilla Firefox. It was addressed and fixed in Firefox version 150, Firefox ESR 115.35, and Firefox ESR 140.10.

Impact Analysis

The specific impact of this vulnerability is not detailed in the provided information. However, since it affects the NSS Libraries component, it could potentially impact the security of cryptographic operations within Firefox.

Compliance Impact

There is no information available regarding the effect of this vulnerability on compliance with standards such as GDPR or HIPAA.

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