In SignalRGB versions prior to 1.3.7.0, the \\.\SignalIo device object is created without…
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
In SignalRGB versions prior to 1.3.7.0, the \\.\SignalIo device object is created without an explicit SDDL security descriptor and without FILE_DEVICE_SECURE_OPEN. This results in overly permissive default access control, allowing any authenticated local user to obtain a handle to the device and issue privileged IOCTLs.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA SignalRGB kernel driver (SignalRGB) Fixed in 1.3.7.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
SignalRGB kernel driver 1.3.7.0
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-07095 In SignalRGB versions prior to 1.3.7.0, seven of the thirteen IOCTL handlers dereference…Priority LOW 39
Timeline
- 2026-10-02 Threatist record created from CVE-2026-8049
- 2026-10-03 Alias added: GHSA-c9xw-w9jw-mq5m
References
More SignalRGB vulnerabilities
- TI-2026-07095 In SignalRGB versions prior to 1.3.7.0, seven of the thirteen IOCTL handlers dereference… CVSS 3.1HIGH 7.5
Sources
- CVE-2026-8049 · CVE Program
- CVE-2026-8049 · NVD
- FIRST EPSS
- GHSA-c9xw-w9jw-mq5m · GitHub Advisory Database · CC BY 4.0
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