HCL BigFix Updates CA Bundle After Certificate Compromise
Tech GuruQuick Answer
HCL advisory KB0134758 covers CVE-2026-108013 in BigFix Platform releases using a CA bundle from before October 20. Deploy BES Support v1520 or later, verify the current bundle, validate download and TLS workflows, and retain evidence.
Confirm Scope And Apply The Supported Remediation
What to do now: Inventory BigFix Platform releases, BES Support component levels, CA bundle dates, relays and servers, external download destinations, network paths, owners, and maintenance windows. Confirm both the BigFix release and the installed CA bundle date. Do not infer exposure from BigFix presence alone, and distinguish customer-managed trust material from the affected bundled Mozilla CA set. Deploy BES Support v1520 or later through the supported HCL channel so the CA bundle is dated October 20, 2026 or later. Confirm the active bundle and BES Support level, test representative downloads and TLS-dependent actions, review unexpected certificate chains or file changes where on-path exposure was plausible, and retain package and change evidence.
Last verified: 2026-10-24 UTC. Recheck the authoritative advisory and supported distribution channel before changing production.
Scope And Authority
| Product scope | HCL BigFix Platform |
|---|---|
| Advisory | KB0134758 |
| CVE | CVE-2026-108013 |
| Authoritative release date | 2026-10-24 06:23:11.930 UTC |
| Authority revision date | 2026-10-24 06:23:11.930 UTC |
| Affected versions | BigFix Platform 11.0.7 and earlier and 10.0.16 and earlier when using a Mozilla CA certificate bundle dated before October 20, 2026. |
| Fixed version | Mozilla CA certificate bundle dated October 20, 2026 or later, available beginning with BES Support v1520 |
| CVSS base score | 6.8 (CVSS v3.1) |
| CVSS severity | Medium |
| Exploitation status | HCL does not state that this issue is being maliciously exploited against BigFix deployments.; no exploitation claim is inferred. |
What Changed
HCL reports that older BigFix CA bundles still trust certificates whose private keys were compromised, allowing an on-path attacker to impersonate remote servers and tamper with files downloaded by the application.
What To Validate Now
- Inventory. Inventory BigFix Platform releases, BES Support component levels, CA bundle dates, relays and servers, external download destinations, network paths, owners, and maintenance windows.
- Establish applicability. Confirm both the BigFix release and the installed CA bundle date. Do not infer exposure from BigFix presence alone, and distinguish customer-managed trust material from the affected bundled Mozilla CA set.
- Remediate. Deploy BES Support v1520 or later through the supported HCL channel so the CA bundle is dated October 20, 2026 or later.
- Validate. Confirm the active bundle and BES Support level, test representative downloads and TLS-dependent actions, review unexpected certificate chains or file changes where on-path exposure was plausible, and retain package and change evidence.
- 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
Certificate distrust can break connections that still depend on the affected chain. Stage the change, validate required endpoints, and do not treat a successful TLS connection by itself as proof that historical traffic was not intercepted.
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.
