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CVE-2021-20677

3.1 · LOW

UNIVERGE Aspire series PBX (UNIVERGE Aspire WX from 1.00 to 3.51, UNIVERGE Aspire UX from 1.00 to 9.70, UNIVERGE SV9100 from 1.00 to 10.70, and SL2100 from 1.00 to 3.00) allows a remote authenticat…

Published Mar 26, 2021EPSS 0.95%

Overview

CVE-2021-20677 is a low-severity vulnerability. It was published on March 26, 2021 and has a CVSS 3.1 base score of 3.1 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.1, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

UNIVERGE Aspire series PBX (UNIVERGE Aspire WX from 1.00 to 3.51, UNIVERGE Aspire UX from 1.00 to 9.70, UNIVERGE SV9100 from 1.00 to 10.70, and SL2100 from 1.00 to 3.00) allows a remote authenticated attacker to cause system down and a denial of service (DoS) condition by sending a specially crafted command.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refjvn.jp/en/jp/JVN12737530/index.htmlRefwww.necplatforms.co.jp/en/press/security_adv.htmlRefjvn.jp/en/jp/JVN12737530/index.htmlRefwww.necplatforms.co.jp/en/press/security_adv.html

How CyberStrike helps

Frequently asked questions

What is CVE-2021-20677?

CVE-2021-20677 is a low-severity vulnerability. It was published on March 26, 2021 and has a CVSS 3.1 base score of 3.1 (LOW).

How severe is CVE-2021-20677?

This vulnerability has a CVSS 3.1 base score of 3.1, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-20677?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-20677?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-20677 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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