CVE-2026-56586: HCL IEM was affected with X-Content-Type-Options Header Missing

Routine

LOW 3.1DOWNGRADE

CVE-2026-56586 is a low-severity flaw (CVSS 3.1) affecting intelliops event management. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

HCL IEM was affected with X-Content-Type-Options Header Missing. It may enable attackers to perform SSL stripping or man-in-the-middle attacks and intercept sensitive data.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	3.1 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 91%)
CISA exploited list	No
Weakness	CWE-16
Published	2026-07-21
Last modified	2026-10-24

Publisher (CNA): HCL Software · Vendor: hcltech

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-21 16:17 UTCPublished CVE record published
2026-10-24 19:10 UTCUpdated Record last modified

hcltech intelliops event management DOWNGRADE

Affected: 1.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1

1. Check installed version

apt-cache policy intelliops-event-management || rpm -q intelliops-event-management || intelliops-event-management --version

2. No fixed release: DOWNGRADE to a release before 1.1 (Debian / Ubuntu)

apt-cache madison intelliops-event-management sudo apt install intelliops-event-management=<VERSION_BEFORE_1.1> sudo apt-mark hold intelliops-event-management

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

dnf --showduplicates list intelliops-event-management sudo dnf downgrade intelliops-event-management-<VERSION_BEFORE_1.1> sudo dnf versionlock add intelliops-event-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-2026-56586?

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

Is CVE-2026-56586 being exploited?

CVE-2026-56586 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-2026-56586 affect?

CVE-2026-56586 affects intelliops event management. Severity is low (CVSS 3.1). HCL IEM was affected with X-Content-Type-Options Header Missing. It may enable attackers to perform SSL stripping or man-in-the-middle attacks and intercept sensitive data.

How urgent is CVE-2026-56586?

Priority 13/100. No elevated risk signals yet.

Related CVEs

CVE-2026-56584 LOW 3.7 DOWNGRADE HCL IEM was affected with the Information disclosure nginx server
CVE-2026-56587 LOW 3.7 DOWNGRADE HCL IEM was affected with Strict transport security not enforced
CVE-2026-56585 LOW 3.1 DOWNGRADE HCL IEM was affected with the Anti Clickjacking XFrame Options Header Missing

References

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