LB-LINK BL-AC3600 shadow hard-coded credentials
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-259.
Summary
A vulnerability, which was classified as critical, has been found in LB-LINK BL-AC3600 1.0.22. Affected by this issue is some unknown functionality of the file /etc/shadow. The manipulation with the input root:blinkadmin leads to hard-coded credentials. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| LB-LINK | BL-AC3600 | 1.0.22 | — | No fix listed | CNA |
- BL-AC3600 VendorLB-LINK Affected 1.0.22 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-7564
- 2026-10-03 Alias added: GHSA-hc7g-5qrx-9jvj
References
More LB-LINK Bl-ac3600 Firmware vulnerabilities
- TI-2025-06902 LB-LINK BL-AC3600 Web Management Interface lighttpd.cgi geteasycfg information disclosure CVSS 4.0MEDIUM 6.9
Sources
- CVE-2025-7564 · CVE Program
- CVE-2025-7564 · NVD
- FIRST EPSS
- GHSA-hc7g-5qrx-9jvj · GitHub Advisory Database · CC BY 4.0
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