#VU59151 Missing Authentication for Critical Function in DeltaV Distributed Control System Controllers and Workstations - CVE-2021-26264

Vulnerability identifier: #VU59151

Vulnerability risk: Low

CVSSv4.0: 2.3 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-26264

CWE-ID: CWE-306

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
DeltaV Distributed Control System Controllers and Workstations
Other software / Other software solutions

Vendor: Emerson

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to the software that is used for critical functionalities lacks authentication. A remote attacker on the local network can cause a denial of service condition on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

DeltaV Distributed Control System Controllers and Workstations: before R6

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External links
https://ics-cert.us-cert.gov/advisories/icsa-21-355-04

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.