What is the CVSS score of CVE-2026-24790?

CVE-2026-24790 has a CVSS 3.1 base score of 8.2 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L. EPSS exploitation probability: 0.1%.

How to fix or mitigate CVE-2026-24790?

Within 24 hours: Identify and inventory all affected devices in production and non-production environments; isolate critical systems to air-gapped or restricted networks if operationally feasible. Within 7 days: Implement network segmentation to restrict PLC access to authorized engineering stations only; deploy network monitoring to detect unauthorized PLC communication attempts; brief operational teams on manual safety procedures. Within 30 days: Evaluate and deploy vendor firmware updates if released; conduct security assessment of PLC configuration and access controls; develop long-term device replacement or upgrade strategy.

CVE-2026-24790

HIGH

Missing Authentication for Critical Function (CWE-306)

2026-02-20 ics-cert@hq.dhs.gov

Authentication Bypass

8.2

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.2 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:04 vuln.today

CVE Published

Feb 20, 2026 - 17:25 nvd

HIGH 8.2

DescriptionCVE.org

The underlying PLC of the device can be remotely influenced, without proper safeguards or authentication.

AnalysisAI

Unauthenticated remote attackers can manipulate the underlying PLC controller on affected devices due to missing authentication controls, enabling modification of device operations and potential service disruption. The vulnerability requires no user interaction and can be exploited over the network, with no official patch currently available to mitigate the risk.

Technical ContextAI

Classified as CWE-306 (Missing Authentication for Critical Function). The underlying PLC of the device can be remotely influenced, without proper safeguards or authentication.