CVE-2021-27258

Name: CVE-2021-27258
Creator: NVD / NIST
Published: 2021-04-14T16:15:13.877+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 3.98%

Last modified Jun 17, 2026

CVE-2021-27258 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. This vulnerability allows remote attackers to execute escalate privileges on affected installations of SolarWinds Orion Platform 2020.2. Authentication is not required to exploit this vulnerability. EPSS estimates a 3.98% chance of exploitation in the next 30 days.

Description

This vulnerability allows remote attackers to execute escalate privileges on affected installations of SolarWinds Orion Platform 2020.2. Authentication is not required to exploit this vulnerability. The specific flaw exists within the SaveUserSetting endpoint. The issue results from improper restriction of this endpoint to unprivileged users. An attacker can leverage this vulnerability to escalate privileges their privileges from Guest to Administrator. Was ZDI-CAN-11903.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

3.98%

89.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

Affected Software

Vendor	Product	Versions
Solarwinds	Orion Platform	2020.2

References

https://www.zerodayinitiative.com/advisories/ZDI-21-192/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-192/Third Party Advisory, VDB Entry

Timeline

Published: Apr 14, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-27258?

How severe is CVE-2021-27258?

CVE-2021-27258 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.98% probability of exploitation in the next 30 days.

How do I fix CVE-2021-27258?

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-2021-27258?

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

Scan your code now

Source: NVD / NIST