CVE-2020-27985

Name: CVE-2020-27985
Creator: NVD / NIST
Published: 2020-11-23T14:15:12.187+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.52%

Last modified Jun 17, 2026

CVE-2020-27985 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Security Onion v2 prior to 2.3.10 has an incorrect sudo configuration, which allows the administrative user to obtain root access without using the sudo password by editing and executing /home/<user>/SecurityOnion/setup/so-setup.. EPSS estimates a 0.52% chance of exploitation in the next 30 days.

Description

Security Onion v2 prior to 2.3.10 has an incorrect sudo configuration, which allows the administrative user to obtain root access without using the sudo password by editing and executing /home/<user>/SecurityOnion/setup/so-setup.

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

0.52%

40.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-306

Affected Software

Vendor	Product	Versions
Securityonionsolutions	Security Onion	>= 2.0.0, < 2.3.10

References

https://github.com/Security-Onion-Solutions/securityonion/commit/b14670030349a2747a00ace665568ab5f51ac47bPatch, Third Party Advisory
https://github.com/Security-Onion-Solutions/securityonion/releasesRelease Notes, Third Party Advisory
https://s1gh.sh/cve-2020-27985-security-onion-local-privilege-escalation/Exploit, Patch, Third Party Advisory
https://github.com/Security-Onion-Solutions/securityonion/commit/b14670030349a2747a00ace665568ab5f51ac47bPatch, Third Party Advisory
https://github.com/Security-Onion-Solutions/securityonion/releasesRelease Notes, Third Party Advisory
https://s1gh.sh/cve-2020-27985-security-onion-local-privilege-escalation/Exploit, Patch, Third Party Advisory

Timeline

Published: Nov 23, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-27985?

How severe is CVE-2020-27985?

CVE-2020-27985 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.52% probability of exploitation in the next 30 days.

How do I fix CVE-2020-27985?

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-2020-27985?

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

Scan your code now

Source: NVD / NIST