Quick answers
- Is CVE-2026-75878 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-75878 being exploited in the wild.
- How severe is CVE-2026-75878?
- Critical severity, with a CVSS score of 9.1, published 18 September 2026.
- Which products and versions are affected?
- IBM Sterling File Gateway 6.2.0.0 through 6.2.2.1.
- Is there a fix for CVE-2026-75878?
- A patch was published on 2026-09-15: Patches available: 6.2.0.6_2, 6.2.1.2_1, 6.2.2.1_1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-75878 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-75878?
- Check whether you run IBM Sterling File Gateway 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
IBM Sterling File Gateway improperly validates SSO headers during authentication, allowing remote attackers to forge authenticated sessions without providing valid credentials. The vulnerability is a CWE-287 improper authentication issue exploitable over the network with no prerequisites. An unauthenticated attacker gains full access to all gateway functionality and protected data.
Affected products
- IBM Sterling File Gateway 6.2.0.0 through 6.2.2.1
Timeline
- 2026-09-15: disclosed: IBM security bulletin published
- 2026-09-15: patched: Patches available: 6.2.0.6_2, 6.2.1.2_1, 6.2.2.1_1