# CVE-2026-56592: HCL BigFix Service Management is affected by multiple security vulnerabilities.

> Unauthenticated attackers can bypass account lockouts to perform brute-force attacks and gain unauthorized access to HCL BigFix Service Management.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Sep 2026
- **Updated:** 18 Sep 2026
- **Also known as:** GHSA-h3cm-83xm-6m56

## What is CVE-2026-56592?

CVE-2026-56592 is a medium-severity authentication bypass vulnerability in HCL BigFix Service Management, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

HCL BigFix Service Management is affected by an Improper Authentication validation vulnerability related to inadequate account lockouts, which could allow an unauthenticated attacker to execute sustained brute-force attacks against the login interface, resulting in unauthorized system access.

Weakness: CWE-307 (Improper Restriction of Excessive Authentication Attempts)

## Which versions are affected by CVE-2026-56592?

It affects 1 product.


Products: Hcltech Bigfix Service Management.

## How do I fix CVE-2026-56592?

No fix has been published for CVE-2026-56592 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-56592 being exploited?

There is no known exploitation of CVE-2026-56592 in the wild and no public exploit code.

## Other vulnerabilities in HCL BigFix Service Management

- [CVE-2026-67100](https://insights.sbomify.com/CVE-2026-67100/): HCL BigFix Service Management is affected by multiple security vulnerabilities. (critical 9.8)
- [CVE-2026-67101](https://insights.sbomify.com/CVE-2026-67101/): HCL BigFix Service Management is affected by multiple security vulnerabilities. (critical 9.3)
- [CVE-2024-30151](https://insights.sbomify.com/CVE-2024-30151/): HCL BigFix Service Management (SM) is susceptible to Broken Access Control Vulnerability (high 8.3)
- [CVE-2026-67102](https://insights.sbomify.com/CVE-2026-67102/): HCL BigFix Service Management is affected by multiple security vulnerabilities. (high 8.1)
- [CVE-2026-67103](https://insights.sbomify.com/CVE-2026-67103/): HCL BigFix Service Management is affected by multiple security vulnerabilities. (high 7.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-56592 and fix it if it is affected.

What it is: CVE-2026-56592 is a medium-severity authentication bypass vulnerability in HCL BigFix Service Management, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-56592 in the wild and no public exploit code.

Affected product: HCL BigFix Service Management. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-56592/ (Markdown: https://insights.sbomify.com/CVE-2026-56592/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-56592
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-56592
- OSV: https://osv.dev/vulnerability/CVE-2026-56592

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-56592/
Summaries are generated and may contain mistakes; the official description above is the record.