CVE-2026-17209: IBM Db2 Mirror for i 7.4, 7.5, and 7.6 could allow a remote authenticated attacker to execute arbitrary script

Routine

MEDIUM 6.3UPGRADE

CVE-2026-17209 is a medium-severity flaw (CVSS 6.3) affecting db2 mirror for i. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

IBM Db2 Mirror for i 7.4, 7.5, and 7.6 could allow a remote authenticated attacker to execute arbitrary scripts due to cross-site scripting.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.4% (top 71%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-08-14
Last modified	2026-08-21

Publisher (CNA): IBM Corporation · Vendor: ibm

Last updated 2026-08-21 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-14 20:16 UTCPublished CVE record published
2026-08-21 13:04 UTCUpdated Record last modified

ibm db2 mirror for i UPGRADE

Affected: >= 7.4 and <= 7.6

Fixed in: newer than 7.6

Safe to downgrade to: a release before 7.4

1. Check installed version

apt-cache policy db2-mirror-for-i || rpm -q db2-mirror-for-i || db2-mirror-for-i --version

2. UPGRADE to newer than 7.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade db2-mirror-for-i

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade db2-mirror-for-i

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 7.4 (Debian / Ubuntu)

apt-cache madison db2-mirror-for-i sudo apt install db2-mirror-for-i=<VERSION_BEFORE_7.4> sudo apt-mark hold db2-mirror-for-i

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

dnf --showduplicates list db2-mirror-for-i sudo dnf downgrade db2-mirror-for-i-<VERSION_BEFORE_7.4> sudo dnf versionlock add db2-mirror-for-i

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-2026-17209?

db2 mirror for i: upgrade to newer than 7.6. Exact commands for each OS are on this page.

Is CVE-2026-17209 being exploited?

CVE-2026-17209 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-2026-17209 affect?

CVE-2026-17209 affects db2 mirror for i. Severity is medium (CVSS 6.3). IBM Db2 Mirror for i 7.4, 7.5, and 7.6 could allow a remote authenticated attacker to execute arbitrary scripts due to cross-site scripting.

How urgent is CVE-2026-17209?

Priority 29/100. No elevated risk signals yet.

Related CVEs

CVE-2026-16956 CRITICAL 9.8 UPGRADE IBM Db2 Mirror for i 7.4, 7.5, and 7.6 could allow a remote attacker to execute arbitrary commands due to impr
CVE-2026-18104 LOW 3.3 UPGRADE IBM Db2 Mirror for i 7.6, 7.5, and 7.4 could allow a local attacker to obtain sensitive information due to the
CVE-2026-16660 MEDIUM 5.3 UPGRADE IBM Db2 Mirror for i 7.4, 7.5, and 7.6 could allow a remote attacker to cause a denial of service due to an ou
CVE-2026-17483 MEDIUM 4.3 UPGRADE IBM Db2 Mirror for i 7.4, 7.5, and 7.6 IBM i could allow a local attacker to delete historical flight-recorder
CVE-2026-18567 MEDIUM 4.4 UPGRADE IBM Db2 Mirror for i 7.4, 7.5, and 7.6 could allow a local attacker to obtain information due to a race condit

References

← Back to latest CVEs