CVE-2026-5387
The vulnerability, if exploited, could allow an unauthenticated miscreant to perform operations intended only for Simulator Instructor or Simulator Developer (Administrator) roles, resulting in privilege escalation with potential for modification of…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The vulnerability, if exploited, could allow an unauthenticated miscreant to perform operations intended only for Simulator Instructor or Simulator Developer (Administrator) roles, resulting in privilege escalation with potential for modification of simulation parameters, training configuration, and training records.
- CVSS 4.0
- 9.3 CRITICALCVSS:4.0/AV:N/AC:L/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/M
- EPSS
- 0.39% probability · 32th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-862
- Source
- ics-cert@hq.dhs.gov
References
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-106-04.json
- https://softwaresupportsp.aveva.com/en-US/downloads/products/details/57b79fdb-7b5f-4125-8a44-833b6b5c6d6f
- https://www.aveva.com/content/dam/aveva/documents/support/cyber-security-updates/SecurityBulletin_AVEVA-2026-004.pdf
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-106-04
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.