CVE-2020-29377

CVE-2020-29377 is a critical-severity vulnerability in Vsolcn V1600d Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Description

An issue was discovered on V-SOL V1600D V2.03.69 OLT devices. The string K0LTdi@gnos312$ is compared to the password provided by the the remote attacker. If it matches, access is provided.

Frequently asked questions

What is CVE-2020-29377?
An issue was discovered on V-SOL V1600D V2.03.69 OLT devices. The string K0LTdi@gnos312$ is compared to the password provided by the the remote attacker. If it matches, access is provided.
How severe is CVE-2020-29377?
CVE-2020-29377 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-29377 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-29377?
CVE-2020-29377 affects Vsolcn V1600d Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-29377?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-29377 published?
CVE-2020-29377 was published on 2020-11-29 and last updated on 2026-06-17.

References

Affected products (1)

More vulnerabilities in Vsolcn V1600d Firmware

All CVEs affecting Vsolcn V1600d Firmware →

Other CWE-798 (Use of Hard-coded Credentials) vulnerabilities

Browse all CWE-798 (Use of Hard-coded Credentials) vulnerabilities →