CVE-2025-1331: IBM CICS TX Standard 11.1 and IBM CICS TX Advanced 10.1 and 11.1 could allow a local user to execute arbitrary

Routine

HIGH 7.8DOWNGRADE

CVE-2025-1331 is a high-severity flaw (CVSS 7.8) affecting cics tx. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

IBM CICS TX Standard 11.1 and IBM CICS TX Advanced 10.1 and 11.1 could allow a local user to execute arbitrary code on the system due to the use of unsafe use of the gets function.

Why this priority

High severity

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

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 80%)
CISA exploited list	No
Weakness	CWE-242
Published	2025-05-08
Last modified	2026-06-17

Publisher (CNA): IBM Corporation · Vendor: ibm

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-05-08 22:15 UTCPublished CVE record published
2026-06-17 08:38 UTCUpdated Record last modified

ibm cics tx DOWNGRADE

Affected: 11.1.0.0 · 11.1.0.0 interim_fix_1 · 11.1.0.0 interim_fix_10 · 11.1.0.0 interim_fix_11 · 11.1.0.0 interim_fix_12 · 11.1.0.0 interim_fix_13 · 11.1.0.0 interim_fix_14 · 11.1.0.0 interim_fix_15

Fixed in: no fixed release known

Safe to downgrade to: a release before 11.1.0.0

1. Check installed version

apt-cache policy cics-tx || rpm -q cics-tx || cics-tx --version

2. No fixed release: DOWNGRADE to a release before 11.1.0.0 (Debian / Ubuntu)

apt-cache madison cics-tx sudo apt install cics-tx=<VERSION_BEFORE_11.1.0.0> sudo apt-mark hold cics-tx

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

dnf --showduplicates list cics-tx sudo dnf downgrade cics-tx-<VERSION_BEFORE_11.1.0.0> sudo dnf versionlock add cics-tx

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-2025-1331?

cics tx: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-1331 being exploited?

CVE-2025-1331 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-2025-1331 affect?

CVE-2025-1331 affects cics tx. Severity is high (CVSS 7.8). IBM CICS TX Standard 11.1 and IBM CICS TX Advanced 10.1 and 11.1 could allow a local user to execute arbitrary code on the system due to the use of unsafe use of the gets function.

How urgent is CVE-2025-1331?

Priority 32/100. High severity

Related CVEs

CVE-2025-1330 HIGH 7.8 DOWNGRADE IBM CICS TX Standard 11.1 and IBM CICS TX Advanced 10.1 and 11.1 could allow a local user to execute arbitrar
CVE-2025-1329 HIGH 7.8 DOWNGRADE IBM CICS TX Standard 11.1 and IBM CICS TX Advanced 10.1 and 11.1 could allow a local user to execute arbitrary
CVE-2024-41746 HIGH 7.2 DOWNGRADE IBM CICS TX Advanced 10.1, 11.1, and Standard 11.1 is vulnerable to stored cross-site scripting
CVE-2024-41745 MEDIUM 6.1 DOWNGRADE IBM CICS TX Standard is vulnerable to cross-site scripting
CVE-2024-41744 MEDIUM 6.5 DOWNGRADE IBM CICS TX Standard 11.1 is vulnerable to cross-site request forgery which could allow an attacker to execute

References

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