CVE-2022-22746

MEDIUM

5.9

CVSS Score

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

Updated: June 17, 2026 at 04:28 AM UTC

3 products affected across 1 vendorFirefoxThunderbirdFirefox ESR· also runs on 1 platform

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Severity

MEDIUM5.9

Exploit prediction

EPSS 0.6%

SSVC

PoC

Description

A race condition could have allowed bypassing the fullscreen notification which could have lead to a fullscreen window spoof being unnoticed.<br>*This bug only affects Firefox for Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.

Affected

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

Firefox · Mozilla

95%

v < 96

Affected range stops below 96, so it looks safe — our inference, not a vendor statement

Affected range stops below 96.0, so it looks safe — our inference, not a vendor statement

microsoft-windows (environment)

Firefox ESR · Mozilla

95%

v < 91.5

Affected range stops below 91.5, so it looks safe — our inference, not a vendor statement

microsoft-windows (environment)

Thunderbird · Mozilla

95%

v < 91.5

Affected range stops below 91.5, so it looks safe — our inference, not a vendor statement

microsoft-windows (environment)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Windows · Microsoft

95%

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 Tracking

Source: [email protected]

https://bugzilla.mozilla.org/show_bug.cgi?id=1735071

Vendor Advisory

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2022-01/

Vendor Advisory

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2022-02/

Vendor Advisory

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2022-03/

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

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

CVSS

5.9MEDIUMCISA-ADP

Attack Vector: NETWORK
Complexity: HIGH
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: HIGH
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-362

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