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CVE-2022-28289

HIGH
8.8
CVSS Score
Published: December 22, 2022 at 12:00 AM UTC
Updated: June 17, 2026 at 04:38 AM UTC
3 products affected across 1 vendorFirefoxThunderbirdFirefox ESR

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Severity
HIGH8.8
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

Mozilla developers and community members Nika Layzell, Andrew McCreight, Gabriele Svelto, and the Mozilla Fuzzing Team reported memory safety bugs present in Thunderbird 91.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 91.8, Firefox < 99, and Firefox ESR < 91.8.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Firefox· Mozilla
95%
v < 99
Affected range stops below 99, so it looks safe — our inference, not a vendor statement
Affected range stops below 99.0, so it looks safe — our inference, not a vendor statement
Firefox ESR· Mozilla
95%
v < 91.8
Affected range stops below 91.8, so it looks safe — our inference, not a vendor statement
Thunderbird· Mozilla
95%
v < 91.8
Affected range stops below 91.8, so it looks safe — our inference, not a vendor statement

References (4)

Issue TrackingVendor Advisory
Source: [email protected]
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1663508%2C1744525%2C1753508%2C1757476%2C1757805%2C1758549%2C1758776
Vendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2022-13/
Vendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2022-14/
Vendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2022-15/

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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