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CVE-2020-27985

24
FAUCET Score

CVE-2020-27985 describes an incorrect sudo configuration in Security Onion v2 prior to version 2.3.10, allowing an administrative user to gain root access without a password by modifying and executing the 'so-setup' script. This vulnerability carries a CVSS score of 7.8 (High), indicating a local attack vector with low complexity, requiring low privileges, and resulting in high impact to confidentiality, integrity, and availability. There is currently no evidence of active exploitation, nor are there publicly available exploit modules or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.0.0, < 2.3.10CPE matchmatch criteria
cpe:2.3:a:securityonionsolutions:security_onion:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.52%
Probability of exploitation in next 30 days
EPSS Percentile
41.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0052 is in the 81st percentile among its peer group of 16,994 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / Security-Onion-Solutions/securityonion/commit/b14670030349a2747a00ace665568ab5f51ac47b
PatchThird Party Advisory
github.com / Security-Onion-Solutions/securityonion/releases
Release NotesThird Party Advisory
s1gh.sh / cve-2020-27985-security-onion-local-privilege-escalation
ExploitPatchThird Party Advisory