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Vulnerability IntelligenceCVE-2026-6757

CVE-2026-6757

MEDIUM6.3

Invalid pointer in the JavaScript: WebAssembly component

Published Apr 21, 2026

Modified 6 days ago

Details

Invalid pointer in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2013588

https://www.cve.org/CVERecord?id=CVE-2026-6757

https://www.mozilla.org/security/advisories/mfsa2026-30/

https://www.mozilla.org/security/advisories/mfsa2026-32/

https://www.mozilla.org/security/advisories/mfsa2026-33/

https://www.mozilla.org/security/advisories/mfsa2026-34/

CVSS Analysis

CVSS v3.1

6.3

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

RequiredUI:R

Scope

Scope

UnchangedS:U

Impact

Confidentiality

LowC:L

Integrity

LowI:L

Availability

LowA:L

6.3/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

Ecosystems

Timeline

PublishedApr 21, 2026

ModifiedApr 22, 2026

CVE-2026-6757 | Mondoo Vulnerability Intelligence