CVE-2020-29381

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.

Published: 2020-11-29 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-29381 is rated High Risk (69.6/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.70%). High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-29381

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-07-07 2.13% 2.70% +0.56%
2 2025-03-30 7.49% 2.13% -5.36%
3 2025-03-29 — 7.49% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-29381

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2020-29381

Affected software / configurations for CVE-2020-29381

Vendor Product Version Raw CPE
vsolcn v1600d_firmware 2.03.57 cpe:2.3:o:vsolcn:v1600d_firmware:2.03.57:*:*:*:*:*:*:*
vsolcn v1600d_firmware 2.03.69 cpe:2.3:o:vsolcn:v1600d_firmware:2.03.69:*:*:*:*:*:*:*
vsolcn v1600d4l_firmware 1.01.49 cpe:2.3:o:vsolcn:v1600d4l_firmware:1.01.49:*:*:*:*:*:*:*
vsolcn v1600d-mini_firmware 1.01.48 cpe:2.3:o:vsolcn:v1600d-mini_firmware:1.01.48:*:*:*:*:*:*:*
vsolcn v1600g1_firmware 1.9.7 cpe:2.3:o:vsolcn:v1600g1_firmware:1.9.7:*:*:*:*:*:*:*
vsolcn v1600g1_firmware 2.0.7 cpe:2.3:o:vsolcn:v1600g1_firmware:2.0.7:*:*:*:*:*:*:*
vsolcn v1600g2_firmware 1.1.4 cpe:2.3:o:vsolcn:v1600g2_firmware:1.1.4:*:*:*:*:*:*:*

References for CVE-2020-29381

URL Tags
https://seclists.org/fulldisclosure/2020/Jul/14 Mailing List Third Party Advisory
cvelogic Threat Intelligence