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CVE-2022-2200

HIGH
8.8
CVSS Score
Published: December 22, 2022 at 12:00 AM UTC
Updated: June 17, 2026 at 04:41 AM UTC
3 products affected across 1 vendorFirefoxThunderbirdFirefox ESR

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Severity
HIGH8.8
Exploit prediction
EPSS 24%
SSVC
No known exploit

Description

If an object prototype was corrupted by an attacker, they would have been able to set undesired attributes on a JavaScript object, leading to privileged code execution. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.

Affected

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

Firefox· Mozilla
95%
v < 102
Affected range stops below 102, so it looks safe — our inference, not a vendor statement
Affected range stops below 102.0, so it looks safe — our inference, not a vendor statement
Firefox ESR· Mozilla
95%
v < 91.11
Affected range stops below 91.11, so it looks safe — our inference, not a vendor statement
Thunderbird· Mozilla
95%
v < 102v < 91.11
Affected range stops below 102, so it looks safe — our inference, not a vendor statement
Affected range stops below 91.11, so it looks safe — our inference, not a vendor statement

References (4)

Issue TrackingPermissions RequiredVendor Advisory
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1771381
Vendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2022-24/
Vendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2022-25/
Vendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2022-26/

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-1321

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