HOMEVULNERABILITIESCVE-2020-27600
CRITICAL

CVE-2020-27600

CWE-78Published: April 2, 2021· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

HNAP1/control/SetMasterWLanSettings.php in D-Link D-Link Router DIR-846 DIR-846 A1_100.26 allows remote attackers to execute arbitrary commands via shell metacharacters in the ssid0 or ssid1 parameter.

NVD Source

Technical Analysis

CVE-2020-27600 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

dlink2 product(s)
dir-846 firmwaredir-846
Source: NVD CPE · 2 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

ADVISORYhttps://github.com/pwnninja/dlink/blob/main/DIR-846_SetMasterWLanSettingsCI.md
ADVISORYhttps://www.dlink.com
ADVISORYhttps://www.dlink.com/en/security-bulletin/
ADVISORYhttps://github.com/pwnninja/dlink/blob/main/DIR-846_SetMasterWLanSettingsCI.md
ADVISORYhttps://www.dlink.com
ADVISORYhttps://www.dlink.com/en/security-bulletin/

All References (6)

→
https://github.com/pwnninja/dlink/blob/main/DIR-846_SetMasterWLanSettingsCI.mdExploit · Third Party Advisory
→
https://www.dlink.comVendor Advisory
→
https://www.dlink.com/en/security-bulletin/Vendor Advisory
→
https://github.com/pwnninja/dlink/blob/main/DIR-846_SetMasterWLanSettingsCI.mdExploit · Third Party Advisory
→
https://www.dlink.comVendor Advisory
→
https://www.dlink.com/en/security-bulletin/Vendor Advisory

Quick Facts

CVE IDCVE-2020-27600
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-78
CISA KEVNo
Affected1 vendor(s)
PublishedApr 2, 2021

Related CVEs (CWE-78)

CVE-2010-2445
10.0
CVE-2010-0418
10.0
CVE-1999-0067
10.0
CVE-2014-6434
10.0
CVE-2009-4025
10.0
CVE-2012-2976
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-27600 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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