CVE-2026-67103: HCL BigFix Service Management is affected by Cross-Site Scripting (XSS) vulnerability, which could allow an at

Routine

HIGH 7.6DOWNGRADE

CVE-2026-67103 is a high-severity flaw (CVSS 7.6) affecting bigfix service management. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

HCL BigFix Service Management is affected by Cross-Site Scripting (XSS) vulnerability, which could allow an attacker to inject unsanitized malicious scripts that execute in a victim's browser, enabling session hijacking, account takeover, and unauthorized actions on behalf of affected users.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.6 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 90%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-09-18
Last modified	2026-10-08

Publisher (CNA): HCL Software · Vendor: hcltech

Last updated 2026-10-08 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-18 08:17 UTCPublished CVE record published
2026-10-08 20:32 UTCUpdated Record last modified

hcltech bigfix service management DOWNGRADE

Affected: 23 · 27

Fixed in: no fixed release known

Safe to downgrade to: a release before 23

1. Check installed version

apt-cache policy bigfix-service-management || rpm -q bigfix-service-management || bigfix-service-management --version

2. No fixed release: DOWNGRADE to a release before 23 (Debian / Ubuntu)

apt-cache madison bigfix-service-management sudo apt install bigfix-service-management=<VERSION_BEFORE_23> sudo apt-mark hold bigfix-service-management

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list bigfix-service-management sudo dnf downgrade bigfix-service-management-<VERSION_BEFORE_23> sudo dnf versionlock add bigfix-service-management

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-67103?

bigfix service management: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-67103 being exploited?

CVE-2026-67103 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-67103 affect?

CVE-2026-67103 affects bigfix service management. Severity is high (CVSS 7.6). HCL BigFix Service Management is affected by Cross-Site Scripting (XSS) vulnerability, which could allow an attacker to inject unsanitized malicious scripts that execute in a victim's browser, enabling session hijacking, account takeover, a

How urgent is CVE-2026-67103?

Priority 29/100. High severity

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References

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