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Vulnerability record · CVE-2020-11491 · published 2 April 2020

CVE-2020-11491: Zevenet zen load balancer path traversal vulnerability

Zevenet · Zen Load Balancer

Monitoring::Logs in Zen Load Balancer 3.10.1 allows remote authenticated admins to conduct absolute path traversal attacks, as demonstrated by a filelog=/etc/shadow request to index.cgi.

4.9 CVSS 3.1 Medium EPSS 7.9% · top 5.5% CWE-22 · Path traversal
4.9CVSS 3.1 base score, v2 4.0
7.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

Monitoring::Logs in Zen Load Balancer 3.10.1 allows remote authenticated admins to conduct absolute path traversal attacks, as demonstrated by a filelog=/etc/shadow request to index.cgi.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://code610.blogspot.com/2020/03/pentesting-zen-load-balancer-quick.html ExploitThird Party Advisory
https://github.com/c610/tmp/blob/master/zenload4patreons.zip ExploitThird Party Advisory
http://code610.blogspot.com/2020/03/pentesting-zen-load-balancer-quick.html ExploitThird Party Advisory
https://github.com/c610/tmp/blob/master/zenload4patreons.zip ExploitThird Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-11491), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.