Authenticated business-logic bypass
Published Oct 6, 2026 · Updated Oct 6, 2026
Improper input validation in HCL BigFix Service Management Version 27 allows remote authenticated users to bypass business logic. HCL has not identified the affected input field or processing routine, or disclosed how malformed data passes validation. Exploitation requires low-privilege access from an adjacent network; the published assessment identifies limited integrity impact, not data disclosure or service interruption.
Summary
What happened
Improper input validation in HCL BigFix Service Management Version 27 allows remote authenticated users to bypass business logic. HCL has not identified the affected input field or processing routine, or disclosed how malformed data passes validation. Exploitation requires low-privilege access from an adjacent network; the published assessment identifies limited integrity impact, not data disclosure or service interruption.
The record
- CVE
- CVE-2026-56596
- Published
- Oct 6, 2026
- Updated
- Oct 6, 2026
- Vendor
- HCL Software
- Product
- HCL BigFix Service Management
- Classifications
- CWE-20
- Attack vector
- adjacent
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 6, 2026CVE publishedPublication date reported by the CVE source.
- Oct 6, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=Version 27
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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