CVE-2026-4728
Spoofing issue in the Privacy: Anti-Tracking component
MEDIUM
6.5
CVSS Score
Published: March 24, 2026 at 12:30 PM UTC
Updated: June 17, 2026 at 10:57 AM UTC
2 products affected across 1 vendorFirefoxThunderbird
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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit
Description
Spoofing issue in the Privacy: Anti-Tracking component. This vulnerability affects Firefox < 149.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (3)
SSVC — Action Prioritization
SSVCNo known exploitNot 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
CWE-290
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