PatchTheCVECVE-2026-17642: IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to execute arbitrary commands due to
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HIGH 8.8MITIGATE
CVE-2026-17642 is a high-severity flaw (CVSS 8.8) affecting i. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to execute arbitrary commands due to improper neutralization of special elements used in an OS command.
Why this priority
- High severity
A fixed release or distro patch exists.
Risk facts
| CVSS score | 8.8 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.8% (top 44%) |
| CISA exploited list | No |
| Weakness | CWE-78 |
| Published | 2026-08-12 |
| Last modified | 2026-10-23 |
Publisher (CNA): IBM Corporation · Vendor: ibm
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
ibm i MITIGATE
Affected: 7.3 · 7.4 · 7.5 · 7.6
Fixed in: no fixed release known
Safe to downgrade to: a release before 7.3
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Exact fixes by distribution
A distro patch exists: prefer upgrading over downgrading.
Fedora 46 · fooyin · FIXED · 0.14.1-6.fc46 · FEDORA-2026-a597ed324c · source
sudo dnf upgrade --advisory=FEDORA-2026-a597ed324c
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.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
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