9.8

CVE-2023-1256: aveva aveva_plant_scada

CVSS: 9.8v3.1CriticalModified
Published 16-03-2023Last modified 16-01-2025
Open JSON

Vulnerability summary

CVE-2023-1256 is a critical (CVSS 9.8) vulnerability in aveva aveva_plant_scada. EPSS estimates a 0.68% chance of exploitation in the next 30 days, higher than 51.7% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.68%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 16-03-2023
    PublishedVulnerability first disclosed.
  2. 16-01-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.68%

Chance of exploitation in the next 30 days

Percentile

52%

Versus all other CVEs

30-day change

0.00 pp

From 0.68% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.68%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Aveva3 products

1 vendor · 3 products

References

1 links