6.7Medium

Ibm Websphere Application Server

CVE-2026-9176

IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to a security bypass due to improper authentication controls. A local attacker could exploit this vulnerability to escalate privileges and gain unauthorized access to protected resources.

What this means for your business

  • It affects Ibm Websphere Application Server. It matters if your company, or a supplier that handles your data, runs it.
  • An attacker can use it only with access to the machine itself, without a login, and without anyone at your company clicking anything.
  • FIRST's prediction model gives it a 0.1% chance of attack attempts being seen in the next 30 days, ranking above 1% of all known flaws.

What to do

  1. 1Check whether your company or your suppliers run Ibm Websphere Application Server, and which version. The affected versions are listed further down this page.
  2. 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.

Not sure if your company is exposed?

Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.

Scoring

CVSS
6.7 (v3.1)
Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-94
Assigned by
psirt@us.ibm.com

Dates

Published
2026-09-10
Last modified
2026-09-15
Sources
NVD

Affected products

  • Ibm Websphere Application Server8.5.0.0 - 8.5.5.31, 9.0.0.0 - 9.0.5.29

As listed in the NVD configuration data. Not a statement about your estate.

References