HOMEVULNERABILITIESCVE-2020-5524
HIGH

CVE-2020-5524

CWE-78Published: February 21, 2020· Updated: Jun 17, 2026

8.8
CVSS v3.1

Official Description

Aterm series (Aterm WF1200C firmware Ver1.2.1 and earlier, Aterm WG1200CR firmware Ver1.2.1 and earlier, Aterm WG2600HS firmware Ver1.3.2 and earlier) allows an attacker on the same network segment to execute arbitrary OS commands with root privileges via UPnP function.

NVD Source

Technical Analysis

CVE-2020-5524 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

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 8.8.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

nec6 product(s)
aterm wg2600hs firmwareaterm wg2600hsaterm wf1200c firmwareaterm wf1200caterm wg1200cr firmwareaterm wg1200cr
Source: NVD CPE · 6 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://jpn.nec.com/security-info/secinfo/nv20-003.html
ADVISORYhttps://jvn.jp/en/jp/JVN49410695/index.html
ADVISORYhttps://jvn.jp/en/jp/JVN25766797/
ADVISORYhttps://jpn.nec.com/security-info/secinfo/nv20-003.html
ADVISORYhttps://jvn.jp/en/jp/JVN49410695/index.html

All References (5)

→
https://jpn.nec.com/security-info/secinfo/nv20-003.htmlNot Applicable · Third Party Advisory
→
https://jvn.jp/en/jp/JVN49410695/index.htmlNot Applicable · Third Party Advisory
→
https://jvn.jp/en/jp/JVN25766797/Third Party Advisory
→
https://jpn.nec.com/security-info/secinfo/nv20-003.htmlNot Applicable · Third Party Advisory
→
https://jvn.jp/en/jp/JVN49410695/index.htmlNot Applicable · Third Party Advisory

Quick Facts

CVE IDCVE-2020-5524
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-78
CISA KEVNo
Affected1 vendor(s)
PublishedFeb 21, 2020

Related CVEs (CWE-78)

CVE-2009-1916
10.0
CVE-2015-2845
10.0
CVE-2013-6881
10.0
CVE-2013-0804
10.0
CVE-2012-5863
10.0
CVE-2015-2844
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-5524 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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