CVE-2025-33124: IBM DB2 Merge Backup for Linux, UNIX and Windows 12.1.0.0 could allow an authenticated user to cause the progr

Routine

MEDIUM 6.5WATCHLISTDOWNGRADE

CVE-2025-33124 is a medium-severity flaw (CVSS 6.5) affecting db2 merge backup. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

IBM DB2 Merge Backup for Linux, UNIX and Windows 12.1.0.0 could allow an authenticated user to cause the program to crash due to the incorrect calculation of a buffer size.

Why this priority

On your watchlist

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

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 80%)
CISA exploited list	No
Weakness	CWE-131
Published	2026-02-17
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

2026-02-17 20:22 UTCPublished CVE record published
2026-06-17 09:13 UTCUpdated Record last modified

ibm db2 merge backup DOWNGRADE

Affected: 12.1.0.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 12.1.0.0

1. Check installed version

apt-cache policy db2-merge-backup || rpm -q db2-merge-backup || db2-merge-backup --version

2. No fixed release: DOWNGRADE to a release before 12.1.0.0 (Debian / Ubuntu)

apt-cache madison db2-merge-backup sudo apt install db2-merge-backup=<VERSION_BEFORE_12.1.0.0> sudo apt-mark hold db2-merge-backup

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

dnf --showduplicates list db2-merge-backup sudo dnf downgrade db2-merge-backup-<VERSION_BEFORE_12.1.0.0> sudo dnf versionlock add db2-merge-backup

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-2025-33124?

db2 merge backup: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-33124 being exploited?

CVE-2025-33124 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-2025-33124 affect?

CVE-2025-33124 affects db2 merge backup. Severity is medium (CVSS 6.5). IBM DB2 Merge Backup for Linux, UNIX and Windows 12.1.0.0 could allow an authenticated user to cause the program to crash due to the incorrect calculation of a buffer size.

How urgent is CVE-2025-33124?

Priority 33/100. On your watchlist

Software pages

Windows vulnerabilities

Related CVEs

CVE-2025-33130 MEDIUM 6.5 DOWNGRADE DOWNGRADE IBM DB2 Merge Backup for Linux, UNIX and Windows 12.1.0.0 could allow an authenticated user to cause the progr
CVE-2025-13108 MEDIUM 5.5 DOWNGRADE DOWNGRADE IBM DB2 Merge Backup for Linux, UNIX and Windows 12.1.0.0 could allow an attacker to access sensitive informat

References

← Back to latest CVEs