Authentication bypass in SolarWinds Orion API

Published: 2020-12-28
Risk Critical
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2020-10148
Exploitation vector Network
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software
Orion Platform
Server applications / Remote management servers, RDP, SSH

Vendor SolarWinds

Security Advisory

This security advisory describes one critical risk vulnerability.

1) Improper Authentication

Risk: Critical

CVSSv3: 9.5 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-10148

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: Yes


The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in when processing authentication requests within the SolarWinds Orion API. If an attacker appends a PathInfo parameter of WebResource.adx, ScriptResource.adx, i18n.ashx, or Skipi18n to a request to a SolarWinds Orion server, SolarWinds may set the SkipAuthorization flag, which may allow the API request to be processed without requiring authentication. This vulnerability could allow a remote non-authenticated attacker to bypass authentication and execute API commands which may result in a compromise of the SolarWinds instance.

Note, this vulnerability is dubbed SUPERNOVA and is being exploited in the wild.


Install updates from vendor's website.

Vulnerable software versions

Orion Platform: 2016.1, 2016.2, 2017.1, 2017.3, 2017.3 HF 3, 2017.3 HF 4, 2017.3 HF 5, 2018.2, 2018.2 HF 2, 2018.2 HF 3, 2018.2 HF 4, 2018.2 HF 5, 2018.2 HF 6, 2018.4, 2018.4 HF 1, 2018.4 HF 2, 2018.4 HF 3, 2019.2, 2019.2 HF 1, 2019.2 HF 2, 2019.2 HF 3, 2019.4, 2019.4 HF 1, 2019.4 HF 2, 2019.4 HF 3, 2019.4 HF 4, 2019.4 HF 5, 2020.2, 2020.2 HF 1, 2020.2.1, 2020.2.1 HF 1

CPE External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.