What is CVE-2022-0566?

CVE-2022-0566 is a high-severity vulnerability in Mozilla Thunderbird, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2022-12-22.

How severe is CVE-2022-0566?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Mozilla Thunderbird

CVE-2022-0566

It may be possible for an attacker to craft an email message that causes Thunderbird to perform an out-of-bounds write of one byte when processing the message. This vulnerability affects Thunderbird < 91.6.1.

Vulnerability class: Buffer Overflow

EPSS: 0.007 (49.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Mozilla Thunderbird — versions unspecified

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

security@mozilla.org (Vendor Advisory)
security@mozilla.org (Permissions Required, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2022-0566?: CVE-2022-0566 is a high-severity vulnerability in Mozilla Thunderbird, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2022-12-22.
How severe is CVE-2022-0566?: High severity. CVSS v3 base score is 8.8 out of 10.