CVE-2025-36017: IBM Controller 11.1.0 through 11.1.1 and IBM Cognos Controller 11.0.0 through 11.0.1 FP6 stores unencrypted se

Routine

MEDIUM 6.5UPGRADE

CVE-2025-36017 is a medium-severity flaw (CVSS 6.5) affecting controller. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

IBM Controller 11.1.0 through 11.1.1 and IBM Cognos Controller 11.0.0 through 11.0.1 FP6 stores unencrypted sensitive information in environmental variables files which can be obtained by an authenticated user.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 81%)
CISA exploited list	No
Weakness	CWE-526
Published	2025-12-08
Last modified	2026-10-07

Publisher (CNA): IBM Corporation · Vendor: ibm

Last updated 2026-10-07 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-08 22:15 UTCPublished CVE record published
2026-10-07 20:10 UTCUpdated Record last modified

ibm controller UPGRADE

Affected: >= 11.1.0 and < 11.1.2

Fixed in: 11.1.2

Safe to downgrade to: a release before 11.1.0

1. Check installed version

apt-cache policy controller || rpm -q controller || controller --version

2. UPGRADE to 11.1.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade controller

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade controller

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 11.1.0 (Debian / Ubuntu)

apt-cache madison controller sudo apt install controller=<VERSION_BEFORE_11.1.0> sudo apt-mark hold controller

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list controller sudo dnf downgrade controller-<VERSION_BEFORE_11.1.0> sudo dnf versionlock add controller

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-2025-36017?

controller: upgrade to 11.1.2. Exact commands for each OS are on this page.

Is CVE-2025-36017 being exploited?

CVE-2025-36017 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-2025-36017 affect?

CVE-2025-36017 affects controller. Severity is medium (CVSS 6.5). IBM Controller 11.1.0 through 11.1.1 and IBM Cognos Controller 11.0.0 through 11.0.1 FP6 stores unencrypted sensitive information in environmental variables files which can be obtained by an authenticated user.

How urgent is CVE-2025-36017?

Priority 27/100. No elevated risk signals yet.

Related CVEs

CVE-2026-5065 HIGH 8.8 UPGRADE IBM Controller 11.0.1, 11.1.0, 11.1.1, and 11.1.2 contains hard-coded credentials, such as a password or crypt
CVE-2025-36326 LOW 3.7 UPGRADE UPGRADE IBM Cognos Controller 11.0.0 through 11.0.1, and IBM Controller 11.1.0 through 11.1.1 could allow an attacker
CVE-2025-36015 MEDIUM 6.5 UPGRADE UPGRADE IBM Controller 11.1.0 through 11.1.1 and IBM Cognos Controller 11.0.0 through 11.0.1 FP6 could allow an authen
CVE-2025-33111 MEDIUM 4.3 UPGRADE UPGRADE IBM Controller 11.1.0 through 11.1.1 and IBM Cognos Controller 11.0.0 through 11.0.1 FP6 is vulnerable to crea
CVE-2025-36102 LOW 2.7 UPGRADE UPGRADE IBM Controller 11.1.0 through 11.1.1 and IBM Cognos Controller 11.0.0 through 11.0.1 FP6 could allow a privile

References

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