CVE-2022-40957

moderate-risk

Published 2022-12-22

Inconsistent data in instruction and data cache when creating wasm code could lead to a potentially exploitable crash.<br>*This bug only affects Firefox on ARM64 platforms.*. This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105.

Do I need to act?

0.17% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 6.5/10 Medium

NETWORK / LOW complexity

Affected Products (3)

Firefox

Firefox Esr

Thunderbird

Affected Vendors

Mozilla

References (8)

Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1777604

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-40/

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-41/

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-42/

Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1777604

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-40/

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-41/

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2022-42/

/ 100

moderate-risk

Severity 24/34 · High

Exploitability 1/34 · Minimal

Exposure 9/34 · Low