CVE-2021-34820

Name: CVE-2021-34820
Creator: NVD / NIST
Published: 2021-07-19T18:15:08.757+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 4.00%

Last modified Jun 17, 2026

CVE-2021-34820 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Web Path Directory Traversal in the Novus HTTP Server. The Novus HTTP Server is affected by the Directory Traversal for Arbitrary File Access vulnerability. EPSS estimates a 4.00% chance of exploitation in the next 30 days.

Description

Web Path Directory Traversal in the Novus HTTP Server. The Novus HTTP Server is affected by the Directory Traversal for Arbitrary File Access vulnerability. A remote, unauthenticated attacker using an HTTP GET request may be able to exploit this issue to access sensitive data. The issue was discovered in the NMS (Novus Management System) software through 1.51.2

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

4.00%

89.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Aat	Novus Management System	<= 1.51.2

References

http://packetstormsecurity.com/files/163453/Novus-Management-System-Directory-Traversal-Cross-Site-Scripting.htmlThird Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2021/Jul/20Mailing List, Third Party Advisory
http://packetstormsecurity.com/files/163453/Novus-Management-System-Directory-Traversal-Cross-Site-Scripting.htmlThird Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2021/Jul/20Mailing List, Third Party Advisory

Timeline

Published: Jul 19, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-34820?

How severe is CVE-2021-34820?

CVE-2021-34820 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 4.00% probability of exploitation in the next 30 days.

How do I fix CVE-2021-34820?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-34820?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST