CVE-2022-42928

HIGH

8.8

CVSS Score

Published: December 22, 2022 at 12:00 AM UTC

Updated: June 17, 2026 at 05:05 AM UTC

3 products affected across 1 vendorFirefoxThunderbirdFirefox ESR

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Severity

HIGH8.8

Exploit prediction

EPSS 0.9%

SSVC

No known exploit

Description

Certain types of allocations were missing annotations that, if the Garbage Collector was in a specific state, could have lead to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 106, Firefox ESR < 102.4, and Thunderbird < 102.4.

Affected

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

Firefox · Mozilla

95%

v < 106

Affected range stops below 106, so it looks safe — our inference, not a vendor statement

Affected range stops below 106.0, so it looks safe — our inference, not a vendor statement

Firefox ESR · Mozilla

95%

v < 102.4

Affected range stops below 102.4, so it looks safe — our inference, not a vendor statement

Thunderbird · Mozilla

95%

v < 102.4

Affected range stops below 102.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

Issue TrackingPermissions Required

Source: [email protected]

https://bugzilla.mozilla.org/show_bug.cgi?id=1791520

Vendor Advisory

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2022-44/

Vendor Advisory

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2022-45/

Vendor Advisory

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2022-46/

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-476

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