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CVE-2022-22748

MEDIUM
6.5
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

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.8%
SSVC
PoC

Description

Malicious websites could have confused Firefox into showing the wrong origin when asking to launch a program and handling an external URL protocol. 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
Firefox ESR· Mozilla
95%
v < 91.5
Affected range stops below 91.5, so it looks safe — our inference, not a vendor statement
Thunderbird· Mozilla
95%
v < 91.5
Affected range stops below 91.5, so it looks safe — our inference, not a vendor statement

References (4)

ExploitIssue TrackingVendor Advisory
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1705211
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

6.5MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfoCWE-79

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