CISA Details ABB PCM600 Scheduler Privilege Risks
Tech GuruQuick Answer
The authority published ICSA-26-274-03 for ABB Protection and Control IED Manager PCM600 through version 2.14. CISA documents two PCM600 Scheduler issues that can expose authentication material or permit privilege escalation. ABB provides a service-account workaround rather than a corrected version in the advisory. Affected deployments should be matched to the authority's exact scope and moved to the supported fixed release.
Confirm Scope And Apply The Supported Fix
What to do now: Inventory ABB Protection and Control IED Manager PCM600 through version 2.14, match the exact affected release or feature, apply the authority-supported fixed build or service remediation, validate the dependent workflow, and preserve evidence.
Last verified: 2026-10-02 UTC. Recheck the authoritative advisory and supported distribution channel before changing production.
Scope And Authority
| Product scope | ABB Protection and Control IED Manager PCM600 through version 2.14 |
|---|---|
| Advisory | ICSA-26-274-03 |
| CVEs | CVE-2026-15952, CVE-2026-15953 |
| Authoritative release date | 2026-10-01 (CISA public advisory date; CSAF current release 2026-10-01 06:00 UTC) |
| Authority revision date | Initial public publication; no later material revision stated when verified |
| Affected versions | ABB PCM600 version 2.14 and earlier. |
| Fixed version | No fixed release is stated; configure ABBPCMSchedulerService to use the same Windows account as PCM600 and follow ABB advisories 2NGA003170 and 2NGA003179 |
| CVSS base score | 5.0 / 6.4 (official CVSS v3.1) |
| CVSS severity | Medium |
| Exploitation status | CISA reports no known public exploitation specifically targeting these vulnerabilities; no exploitation claim is inferred. |
What Changed
CISA documents two PCM600 Scheduler issues that can expose authentication material or permit privilege escalation. ABB provides a service-account workaround rather than a corrected version in the advisory.
What To Validate Now
- Inventory. Locate ABB Protection and Control IED Manager PCM600 through version 2.14 deployments, versions, enabled features, exposure paths, owners, and dependent services.
- Establish applicability. Match the exact product and affected-version statement in ICSA-26-274-03. Do not generalize the finding to another product, service, or release.
- Remediate. Follow the authority-supported disposition: No fixed release is stated; configure ABBPCMSchedulerService to use the same Windows account as PCM600 and follow ABB advisories 2NGA003170 and 2NGA003179.
- Validate. Confirm the corrected release or mitigation state, restrict unnecessary exposure, validate safety and operational workflows, review relevant authentication, network, application, and device telemetry, and document exceptions.
- Retain evidence. Preserve asset and owner identifiers, the applicability decision, before-and-after versions, change approval, installation output, validation results, and any exception or rollback record.
Operational Cautions
Test changes in a representative environment, preserve configurations and forensic evidence before destructive action, coordinate with operations and safety owners, and treat exposure reduction as a mitigation rather than proof of remediation.
Evidence To Retain
- Exact product, release stream, package or application version, enabled feature, environment, and accountable owner.
- UTC timestamps, authority revision, approved change record, installer or package-manager output, and resulting version.
- Relevant logs and monitoring evidence, test results, exceptions, compensating controls, and rollback decisions.
Related TechGeeks Resources
Authoritative References
Correction policy: If the authority changes affected versions, fixed versions, severity, exploitation information, mitigations, or required action, TechGeeks will update this notice and its verification date.
