HOMEVULNERABILITIESCVE-2017-18777
HIGH

CVE-2017-18777

CWE-522Published: April 22, 2020· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

Certain NETGEAR devices are affected by administrative password disclosure. This affects D6220 before V1.0.0.28, D6400 before V1.0.0.60, D8500 before V1.0.3.29, DGN2200v4 before 1.0.0.82, DGN2200Bv4 before 1.0.0.82, R6300v2 before 1.0.4.8, R6400 before 1.0.1.20, R6700 before 1.0.1.20, R6900 before 1.0.1.20, R7000 before 1.0.7.10, R7100LG before V1.0.0.32, R7300DST before 1.0.0.52, R7900 before 1.0.1.16, R8000 before 1.0.3.36, R8300 before 1.0.2.94, R8500 before 1.0.2.94, WNDR3400v3 before 1.0.1.12, and WNR3500Lv2 before 1.2.0.40.

NVD Source

Technical Analysis

CVE-2017-18777 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

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 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

netgear36 product(s)
d6220 firmwared6220d6400 firmwared6400d8500 firmwared8500dgn2200 firmwaredgn2200dgn2200b firmwaredgn2200br6300 firmwarer6300+24
Source: NVD CPE · 36 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://kb.netgear.com/000049551/Security-Advisory-for-Administrative-Password-Disclosure-on-Some-Routers-and-Gateways-PSV-2017-0385
ADVISORYhttps://kb.netgear.com/000049551/Security-Advisory-for-Administrative-Password-Disclosure-on-Some-Routers-and-Gateways-PSV-2017-0385

All References (2)

→
https://kb.netgear.com/000049551/Security-Advisory-for-Administrative-Password-Disclosure-on-Some-Routers-and-Gateways-PSV-2017-0385Vendor Advisory
→
https://kb.netgear.com/000049551/Security-Advisory-for-Administrative-Password-Disclosure-on-Some-Routers-and-Gateways-PSV-2017-0385Vendor Advisory

Quick Facts

CVE IDCVE-2017-18777
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-522
CISA KEVNo
Affected1 vendor(s)
PublishedApr 22, 2020

Related CVEs (CWE-522)

CVE-2024-12799
10.0
CVE-2026-29128
10.0
CVE-2021-36783
9.9
CVE-2026-56843
9.9
CVE-2019-1384
9.9
CVE-2025-0867
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-18777 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.COM. CVE data is provided under the NVD usage policy.
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