What’s Vulnerable › Vulnerabilities

CVE-2021-20776

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-07-07 · updated 2026-06-17
• Weakness: CWE-287

Description

Improper authentication vulnerability in SCT-40CM01SR and AT-40CM01SR allows an attacker to bypass access restriction and execute an arbitrary command via telnet.

Affected products

• A-Stage-Inc At-40Cm01Sr Firmware: all versions
• A-Stage-Inc Sct-40Cm01Sr Firmware: all versions

References

• https://jvn.jp/en/jp/JVN21636825/index.html
• https://jvn.jp/en/jp/JVN21636825/index.html

Get alerted when CVE-2021-20776 or the next vulnerability affects your stack