CVE-2022-34309: IBM CICS TX Standard and Advanced 11.1 uses weaker than expected cryptographic algorithms that could allow an

Routine

MEDIUM 5.9REMOTEDOWNGRADE

CVE-2022-34309 is a medium-severity flaw (CVSS 5.9) 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 and Advanced 11.1 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 229440.

Why this priority

Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 58%)
CISA exploited list	No
Weakness	CWE-327
Published	2024-02-12
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

2024-02-12 19:15 UTCPublished CVE record published
2026-06-17 04:50 UTCUpdated Record last modified

ibm cics tx DOWNGRADE

Affected: 11.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 11.1

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 (Debian / Ubuntu)

apt-cache madison cics-tx sudo apt install cics-tx=<VERSION_BEFORE_11.1> 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> 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-2022-34309?

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

Is CVE-2022-34309 being exploited?

CVE-2022-34309 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-2022-34309 affect?

CVE-2022-34309 affects cics tx. Severity is medium (CVSS 5.9). IBM CICS TX Standard and Advanced 11.1 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 229440.

How urgent is CVE-2022-34309?

Priority 36/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-1331 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-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

References

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