An issue was discovered on V-SOL V1600D4L V1.01.49 and V1600D-MINI V1.01.48 OLT devices.
Priority LOW 25CWE-306Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-306.
Summary
An issue was discovered on V-SOL V1600D4L V1.01.49 and V1600D-MINI V1.01.48 OLT devices. During the process of updating the firmware, the update script starts a telnetd -l /bin/sh process that does not require authentication for TELNET access.
Why it matters now
EPSS 0.00324 25th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:vsolcn:v1600d4l_firmware:1.01.49:*:*:*:*:*:*:* | 1.01.49 | Vulnerable | Vsolcn |
| cpe:2.3:h:vsolcn:v1600d4l:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Vsolcn |
| cpe:2.3:o:vsolcn:v1600d-mini_firmware:1.01.48:*:*:*:*:*:*:* | 1.01.48 | Vulnerable | Vsolcn |
| cpe:2.3:h:vsolcn:v1600d-mini:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Vsolcn |
- cpe:2.3:o:vsolcn:v1600d4l_firmware:1.01.49:*:*:*:*:*:*:* Versions 1.01.49 Vulnerable ·Vsolcn
- cpe:2.3:h:vsolcn:v1600d4l:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Vsolcn
- cpe:2.3:o:vsolcn:v1600d-mini_firmware:1.01.48:*:*:*:*:*:*:* Versions 1.01.48 Vulnerable ·Vsolcn
- cpe:2.3:h:vsolcn:v1600d-mini:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Vsolcn
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-29379
- 2026-10-03 Alias added: GHSA-w4p5-jc3g-29j3
References
More Vsolcn V1600d-mini Firmware vulnerabilities
- TI-2020-17662 An issue was discovered on V-SOL V1600D V2.03.69 and V2.03.57, V1600D4L V1.01.49… CVSS 3.1CRITICAL 9.8
- TI-2020-17657 An issue was discovered on V-SOL V1600D V2.03.69 and V2.03.57, V1600D4L V1.01.49… CVSS 3.1CRITICAL 9.8
- TI-2020-17659 An issue was discovered on V-SOL V1600D V2.03.69 and V2.03.57, V1600D4L V1.01.49… CVSS 3.1HIGH 8.8
- TI-2020-17656 An issue was discovered on V-SOL V1600D V2.03.69 and V2.03.57, V1600D4L V1.01.49… CVSS 3.1HIGH 8.8
- TI-2020-17664 An issue was discovered on V-SOL V1600D4L V1.01.49 and V1600D-MINI V1.01.48 OLT devices. CVSS 3.1HIGH 7.8
- TI-2020-17661 An issue was discovered on V-SOL V1600D V2.03.69 and V2.03.57, V1600D4L V1.01.49… CVSS 3.1MEDIUM 5.9
Sources
- CVE-2020-29379 · CVE Program
- CVE-2020-29379 · NVD
- FIRST EPSS
- GHSA-w4p5-jc3g-29j3 · GitHub Advisory Database · CC BY 4.0
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