Vulnerability · Published Apr 26, 2021 · Assigned by jpcert
CVE-2021-20712
Medium 5.3
In plain English
A medium-severity security flaw in NEC Aterm devices from NEC Corporation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities).
Severity (CVSS NVD)5.3Medium
Exploit odds (30 days)0.8%top 43.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| NEC Corporation | NEC Aterm devices | Aterm WG2600HS firmware Ver1.5.1 and earlier, and Aterm WX3000HP firmware Ver1.1.2 and earlier |
References
- https://jpn.nec.com/security-info/secinfo/nv21-010.html x_refsource_MISC
- https://jvn.jp/en/jp/JVN29739718/index.html x_refsource_MISC