CVE-2020-26131

Name: CVE-2020-26131
Creator: NVD / NIST
Published: 2020-10-28T18:15:13.553+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.42%

Last modified Jun 17, 2026

CVE-2020-26131 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Issues were discovered in Open DHCP Server (Regular) 1.75 and Open DHCP Server (LDAP Based) 0.1Beta. Due to insufficient access restrictions in the default installation directory, an attacker can elevate privileges by replacing the OpenDHCPServer.exe (Regular) or the OpenDHCPLdap.exe (LDAP Based) binary.. EPSS estimates a 0.42% chance of exploitation in the next 30 days.

Description

Issues were discovered in Open DHCP Server (Regular) 1.75 and Open DHCP Server (LDAP Based) 0.1Beta. Due to insufficient access restrictions in the default installation directory, an attacker can elevate privileges by replacing the OpenDHCPServer.exe (Regular) or the OpenDHCPLdap.exe (LDAP Based) binary.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.42%

33.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-732

Affected Software

Vendor	Product	Versions	Update
Open Dhcp Server Project	Open Dhcp Server	0.1	Beta
Open Dhcp Server Project	Open Dhcp Server	1.75	—

References

https://github.com/OffensiveOceloot/advisories/blob/main/CVE-2020-26131.md
https://github.com/an0ry/advisoriesExploit, Third Party Advisory
https://sourceforge.net/projects/dhcpserver/Product
https://github.com/OffensiveOceloot/advisories/blob/main/CVE-2020-26131.md
https://github.com/an0ry/advisoriesExploit, Third Party Advisory
https://sourceforge.net/projects/dhcpserver/Product

Timeline

Published: Oct 28, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-26131?

How severe is CVE-2020-26131?

CVE-2020-26131 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.42% probability of exploitation in the next 30 days.

How do I fix CVE-2020-26131?

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-2020-26131?

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

Scan your code now

Source: NVD / NIST