CVE-2026-6764
Incorrect boundary conditions in the DOM: Device Interfaces component
MEDIUM
6.5
CVSS Score
Published: April 21, 2026 at 12:40 PM UTC
Updated: October 26, 2026 at 09:10 PM UTC
2 products affected across 1 vendorFirefoxThunderbird
Using Firefox by Mozilla?
Get instant alerts when new vulnerabilities affect Firefox - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM6.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit
Description
Incorrect boundary conditions in the DOM: Device Interfaces component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 140.10.0v < 150.0
Vendor states this is fixed in 140.10 (unaffected)
Vendor states this is fixed in 150 (unaffected)
140.0 ≤ v < 140.10.0
Vendor states this is fixed in 140.10 (unaffected)
Vendor states this is fixed in 150 (unaffected)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (5)
SSVC — Action Prioritization
SSVCNo known exploitAutomatablePartial 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
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- LOW
- Availability
- LOW
Vector?
Quick Info
StatusANALYZED
CWE
CWE-119
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card