What’s Vulnerable › Vulnerabilities

CVE-2020-5635

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-12-14 · updated 2026-06-17
• Weakness: CWE-78

Description

Aterm SA3500G firmware versions prior to Ver. 3.5.9 allows an attacker on the adjacent network to send a specially crafted request to a specific URL, which may result in an arbitrary command execution.

Affected products

• NEC Corporation Aterm SA3500G: before 3.5.9 — fixed in 3.5.9

How to fix

Upgrade to a fixed version: NEC Corporation Aterm SA3500G 3.5.9. Check the vendor advisory for mitigations.

References

• https://jvn.jp/en/jp/JVN55917325/index.html
• https://jvn.jp/jp/JVN55917325/index.html
• https://www.necplatforms.co.jp/product/security_ap/info_20201211.html
• https://jvn.jp/en/jp/JVN55917325/index.html
• https://jvn.jp/jp/JVN55917325/index.html
• https://www.necplatforms.co.jp/product/security_ap/info_20201211.html

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