Is CVE-2021-27258 actively exploited?

No active exploitation of CVE-2021-27258 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-27258 be exploited remotely?

Yes. CVE-2021-27258 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-27258?

CVE-2021-27258 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2021-27258

CWE-284Published: April 14, 2021· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2021-27258 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.