CVE-2026-66372

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.27% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 19.8% of scored records. A rank, not a probability.

NVD base score

7.6 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-09-18.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-09-15 20:41Z1 MO AGO

Last updated

2026-09-17 18:46Z1 MO AGO

Reserved

2026-08-03

Assigning CNA

icscert

Record state

PUBLISHED

Severity

High (CVSS 7.6)

CNA CVSS vector

CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Weaknesses

• CWE-337Predictable Seed in Pseudo-Random Number Generator (PRNG)Variant

Data version

5.2

Document digest

cd18d1daf6ec2c19a964bafa36447d0e954ca09e02308604ddedd70c528366b8

• digital-watchdog.comhttps://digital-watchdog.com/downloads/
• www.cisa.govhttps://www.cisa.gov/news-events/ics-advisories/icsa-26-258-01
• github.comhttps://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-258-01.json