Quick answers
- Is CVE-2026-17262 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-17262 being exploited in the wild.
- How severe is CVE-2026-17262?
- Medium severity, with a CVSS score of 5.4, published 18 September 2026.
- Which products and versions are affected?
- IBM I 7.3, 7.4, 7.5, 7.6.
- Is there a fix for CVE-2026-17262?
- A patch was published on 2026-09-18: PTFs released for versions 7.3 (SJ11384), 7.4 (SJ11383), 7.5 (SJ11382), 7.6 (SJ11371) Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-17262 attacked?
- It is attacked from the adjacent network.
- Am I affected by CVE-2026-17262?
- Check whether you run IBM I at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A CWE-78 OS command injection vulnerability in IBM i's FTP implementation fails to properly validate authentication commands, allowing local attackers to trigger a denial of service condition. The vulnerability requires local access (adjacent network vector per CVSS vector AV:A) and no authentication, resulting in integrity and availability impact. Patches are available as PTFs for all affected versions.
Affected products
- IBM i 7.3, 7.4, 7.5, 7.6
Timeline
- 2026-09-18: disclosed: IBM security bulletin published
- 2026-09-18: patched: PTFs released for versions 7.3 (SJ11384), 7.4 (SJ11383), 7.5 (SJ11382), 7.6 (SJ11371)