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CVE-2023-1256

CRITICALCVSS 9.8/10EPSS 0.68%

Last modified

CVE-2023-1256 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The listed versions of AVEVA Plant SCADA and AVEVA Telemetry Server are vulnerable to an improper authorization exploit which could allow an unauthenticated user to remotely read data, cause denial of service, and tamper with alarm states.. EPSS estimates a 0.68% chance of exploitation in the next 30 days.

Description

The listed versions of AVEVA Plant SCADA and AVEVA Telemetry Server are vulnerable to an improper authorization exploit which could allow an unauthenticated user to remotely read data, cause denial of service, and tamper with alarm states.

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
0.68%

47.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
AvevaAveva Plant Scada2020r2
AvevaAveva Plant Scada2023
AvevaTelemetry Server2020r2

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-1256?
The listed versions of AVEVA Plant SCADA and AVEVA Telemetry Server are vulnerable to an improper authorization exploit which could allow an unauthenticated user to remotely read data, cause denial of service, and tamper with alarm states.
How severe is CVE-2023-1256?
CVE-2023-1256 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.68% probability of exploitation in the next 30 days.
How do I fix CVE-2023-1256?
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-2023-1256?

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

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Source: NVD / NIST