CVE-2021-20712
MEDIUM
5.3
CVSS Score
Published: April 26, 2021 at 12:20 AM UTC
Updated: June 17, 2026 at 03:34 AM UTC
4 products affected across 1 vendorAterm WG2600HS FirmwareAterm WX3000HP FirmwareAterm WG2600HS
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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.8%
Description
Improper access control vulnerability in NEC Aterm WG2600HS firmware Ver1.5.1 and earlier, and Aterm WX3000HP firmware Ver1.1.2 and earlier allows a device connected to the LAN side to be accessed from the WAN side due to the defect in the IPv6 firewall function.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Aterm WG2600HS· NECdevice
80%All versions
Aterm WX3000HP· NECdevice
80%All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_MISCMitigationVendor Advisory
Source: [email protected]
https://jpn.nec.com/security-info/secinfo/nv21-010.htmlx_refsource_MISCThird Party Advisory
Source: [email protected]
https://jvn.jp/en/jp/JVN29739718/index.htmlCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- LOW
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-Other
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