HOMEVULNERABILITIESCVE-2018-20432
CRITICAL

CVE-2018-20432

CWE-798Published: September 14, 2020· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

D-Link COVR-2600R and COVR-3902 Kit before 1.01b05Beta01 use hardcoded credentials for telnet connection, which allows unauthenticated attackers to gain privileged access to the router, and to extract sensitive data or modify the configuration.

NVD Source

Technical Analysis

CVE-2018-20432 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.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

dlink4 product(s)
covr-2600r firmwarecovr-2600rcovr-3902 firmwarecovr-3902
Source: NVD CPE · 4 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
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10109
PATCHhttps://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10109
ADVISORYhttp://packetstormsecurity.com/files/159058/COVR-3902-1.01B0-Hardcoded-Credentials.html
ADVISORYhttps://cybersecurityworks.com/zerodays/cve-2018-20432-dlink.html
ADVISORYhttp://packetstormsecurity.com/files/159058/COVR-3902-1.01B0-Hardcoded-Credentials.html
ADVISORYhttps://cybersecurityworks.com/zerodays/cve-2018-20432-dlink.html

All References (6)

→
http://packetstormsecurity.com/files/159058/COVR-3902-1.01B0-Hardcoded-Credentials.htmlExploit · Third Party Advisory · VDB Entry
→
https://cybersecurityworks.com/zerodays/cve-2018-20432-dlink.htmlExploit · Third Party Advisory
→
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10109Patch · Vendor Advisory
→
http://packetstormsecurity.com/files/159058/COVR-3902-1.01B0-Hardcoded-Credentials.htmlExploit · Third Party Advisory · VDB Entry
→
https://cybersecurityworks.com/zerodays/cve-2018-20432-dlink.htmlExploit · Third Party Advisory
→
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10109Patch · Vendor Advisory

Quick Facts

CVE IDCVE-2018-20432
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-798
CISA KEVNo
Affected1 vendor(s)
PublishedSep 14, 2020

Related CVEs (CWE-798)

CVE-2017-2343
10.0
CVE-2020-1614
10.0
CVE-2026-45336
10.0
CVE-2026-13768
10.0
CVE-2020-6963
10.0
CVE-2021-40519
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-20432 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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