Is CVE-2020-29381 actively exploited?

No active exploitation of CVE-2020-29381 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-29381 be exploited remotely?

Yes. CVE-2020-29381 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-29381?

CVE-2020-29381 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2020-29381

CWE-78Published: November 29, 2020· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

An issue was discovered on V-SOL V1600D V2.03.69 and V2.03.57, V1600D4L V1.01.49, V1600D-MINI V1.01.48, V1600G1 V2.0.7 and V1.9.7, and V1600G2 V1.1.4 OLT devices. Command injection can occur in "upload tftp syslog" and "upload tftp configuration" in the CLI via a crafted filename.

NVD Source

Technical Analysis

CVE-2020-29381 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.