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5.9 Medium

CVE-2025-4082 Modification of specific WebGL shader attributes could trigger an out-of-bounds read, which, when chained with other…

Description

Modification of specific WebGL shader attributes could trigger an out-of-bounds read, which, when chained with other vulnerabilities, could be used to escalate privileges. *This bug only affects Thunderbird for macOS. Other versions of Thunderbird are unaffected.*. This vulnerability was fixed in Firefox 138, Firefox ESR 128.10, Firefox ESR 115.23, Thunderbird 138, and Thunderbird 128.10.

Affected products and versions

Product Affected versions Fixed in
Firefox 138 earliest → < 138 138
Firefox 128.10 earliest → < 128.10 128.10
Firefox 115.23 earliest → < 115.23 115.23
Firefox ESR 115.23 earliest → < 115.23 115.23
Thunderbird 138 earliest → < 138 138
Thunderbird 128.10 earliest → < 128.10 128.10

Other CVEs of Firefox

The 2221 CVEs of Firefox →
CVE-2026-120572 Incorrect boundary conditions in the Layout: Block and Inline component 8.8 High CVE-2026-118027 Frame poisoning in the Layout component 9.1 Critical CVE-2026-118025 Other issue in the SVG component 8.8 High CVE-2026-118026 Invalid pointer in the JavaScript: GC component 8.8 High
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