What is CVE-2020-29383?

CVE-2020-29383 is a high-severity vulnerability in Vsolcn V1600d4l, classified under Use of Hard-coded Credentials. CVSS score: 7.8/10. Published 2020-11-29.

How severe is CVE-2020-29383?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Vsolcn V1600d4l

CVE-2020-29383

An issue was discovered on V-SOL V1600D4L V1.01.49 and V1600D-MINI V1.01.48 OLT devices. A hardcoded RSA private key (specific to V1600D4L and V1600D-MINI) is contained in the firmware images.

Published 2020-11-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (17.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 17.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Vsolcn V1600d4l
Vsolcn V1600d4l Firmware — versions 1.01.49
Vsolcn V1600d-Mini
Vsolcn V1600d-Mini Firmware — versions 1.01.48

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

seclists.org/fulldisclosure/2020/Jul/14 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2020-29383?: CVE-2020-29383 is a high-severity vulnerability in Vsolcn V1600d4l, classified under Use of Hard-coded Credentials. CVSS score: 7.8/10. Published 2020-11-29.
How severe is CVE-2020-29383?: High severity. CVSS v3 base score is 7.8 out of 10.