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CVE-2026-1352: IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 for Linux, UNIX and Windows (includes Db2 Connect Ser

34
Routine
MEDIUM 6.5WATCHLISTUPGRADEUPGRADEUPGRADE

CVE-2026-1352 is a medium-severity flaw (CVSS 6.5) affecting db2, db2, db2. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 for Linux, UNIX and Windows (includes Db2 Connect Server) could allow an authenticated user to cause a denial of service due to improper neutralization of special elements in data query logic.

Why this priority

  • On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score6.5 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.3% (top 74%)
CISA exploited listNo
WeaknessCWE-1284
Published2026-04-23
Last modified2026-10-25
Publisher (CNA): IBM Corporation · Vendor: ibm

Share: LinkedIn · X · Reddit

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

ibm db2 UPGRADE
Affected: >= 11.5.0 and <= 11.5.9 · >= 12.1.0 and <= 12.1.4
Fixed in: newer than 12.1.4
Safe to downgrade to: a release before 11.5.0
1. Check installed version
apt-cache policy db2 || rpm -q db2 || db2 --version
2. UPGRADE to newer than 12.1.4 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade db2
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade db2
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 11.5.0 (Debian / Ubuntu)
apt-cache madison db2 sudo apt install db2=<VERSION_BEFORE_11.5.0> sudo apt-mark hold db2
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list db2 sudo dnf downgrade db2-<VERSION_BEFORE_11.5.0> sudo dnf versionlock add db2
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.
ibm db2 UPGRADE
Affected: >= 11.5.0 and <= 11.5.9 · >= 12.1.0 and <= 12.1.4
Fixed in: newer than 12.1.4
Safe to downgrade to: a release before 11.5.0
1. Check installed version
apt-cache policy db2 || rpm -q db2 || db2 --version
2. UPGRADE to newer than 12.1.4 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade db2
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade db2
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 11.5.0 (Debian / Ubuntu)
apt-cache madison db2 sudo apt install db2=<VERSION_BEFORE_11.5.0> sudo apt-mark hold db2
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list db2 sudo dnf downgrade db2-<VERSION_BEFORE_11.5.0> sudo dnf versionlock add db2
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.
ibm db2 UPGRADE
Affected: >= 11.5.0 and <= 11.5.9 · >= 12.1.0 and <= 12.1.4
Fixed in: newer than 12.1.4
Safe to downgrade to: a release before 11.5.0
1. Check installed version
apt-cache policy db2 || rpm -q db2 || db2 --version
2. UPGRADE to newer than 12.1.4 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade db2
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade db2
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 11.5.0 (Debian / Ubuntu)
apt-cache madison db2 sudo apt install db2=<VERSION_BEFORE_11.5.0> sudo apt-mark hold db2
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list db2 sudo dnf downgrade db2-<VERSION_BEFORE_11.5.0> sudo dnf versionlock add db2
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-2026-1352?

db2: upgrade to newer than 12.1.4; db2: upgrade to newer than 12.1.4; db2: upgrade to newer than 12.1.4. Exact commands for each OS are on this page.

Is CVE-2026-1352 being exploited?

CVE-2026-1352 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-2026-1352 affect?

CVE-2026-1352 affects db2, db2, db2. Severity is medium (CVSS 6.5). IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 for Linux, UNIX and Windows (includes Db2 Connect Server) could allow an authenticated user to cause a denial of service due to improper neutralization of special elements in data que

How urgent is CVE-2026-1352?

Priority 34/100. On your watchlist

Software pages

Windows vulnerabilities

Related CVEs

References

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