HOMEVULNERABILITIESCVE-2020-29380
MEDIUM

CVE-2020-29380

CWE-319Published: November 29, 2020· Updated: Jun 17, 2026

5.9
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. TELNET is offered by default but SSH is not always available. An attacker can intercept passwords sent in cleartext and conduct a man-in-the-middle attack on the management of the appliance.

NVD Source

Technical Analysis

CVE-2020-29380 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), with a CVSS base score of 5.9.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

vsolcn10 product(s)
v1600d firmwarev1600dv1600d4l firmwarev1600d4lv1600d-mini firmwarev1600d-miniv1600g1 firmwarev1600g1v1600g2 firmwarev1600g2
Source: NVD CPE · 12 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories

ADVISORYhttps://seclists.org/fulldisclosure/2020/Jul/14
ADVISORYhttps://seclists.org/fulldisclosure/2020/Jul/14

All References (2)

→
https://seclists.org/fulldisclosure/2020/Jul/14Mailing List · Third Party Advisory
→
https://seclists.org/fulldisclosure/2020/Jul/14Mailing List · Third Party Advisory

Quick Facts

CVE IDCVE-2020-29380
CVSS Score5.9 / 10
SeverityMEDIUM
WeaknessCWE-319
CISA KEVNo
Affected1 vendor(s)
PublishedNov 29, 2020

Related CVEs (CWE-319)

CVE-2025-47419
10.0
CVE-2025-4378
10.0
CVE-2020-10376
9.8
CVE-2017-15999
9.8
CVE-2019-17393
9.8
CVE-2020-9550
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-29380 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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