CVE-2022-28281

high-risk
Published 2022-12-22

If a compromised content process sent an unexpected number of WebAuthN Extensions in a Register command to the parent process, an out of bounds write would have occurred leading to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 91.8, Firefox < 99, and Firefox ESR < 91.8.

Do I need to act?

!
13.8% chance of exploitation in next 30 days
EPSS score — higher than 86% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (3)

Affected Vendors

Mozilla

References (8)

Exploit https://bugzilla.mozilla.org/show_bug.cgi?id=1755621
Exploit https://www.mozilla.org/security/advisories/mfsa2022-13/
Exploit https://www.mozilla.org/security/advisories/mfsa2022-14/
Exploit https://www.mozilla.org/security/advisories/mfsa2022-15/
Exploit https://bugzilla.mozilla.org/show_bug.cgi?id=1755621
Exploit https://www.mozilla.org/security/advisories/mfsa2022-13/
Exploit https://www.mozilla.org/security/advisories/mfsa2022-14/
Exploit https://www.mozilla.org/security/advisories/mfsa2022-15/
51
/ 100
high-risk
Severity 30/34 · Critical
Exploitability 12/34 · Low
Exposure 9/34 · Low