CVE-2026-87958 Denial of service in Db2

What is CVE-2026-87958?

CVE-2026-87958 is a high-severity denial of service vulnerability in Ibm Db2, published on 10 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 is vulnerable to a denial of service where a specific functionality on a Db2 server can be disabled by a privileged user under certain conditions.

Weakness: CWE-269

Which versions are affected by CVE-2026-87958?

It affects 1 product.

Products include Ibm Db2.

How do I fix CVE-2026-87958?

No fix has been published for CVE-2026-87958 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2026-87958 being exploited?

There is no known exploitation of CVE-2026-87958 in the wild and no public exploit code.

Other vulnerabilities in Ibm Db2

• CVE-2012-1797 IBM DB2 9.5 uses world-writable permissions for nodes.reg, which has unspecified impact and attack vectors. Critical 10.0
• CVE-2010-3731 Memory corruption in n/a Critical 10.0
• CVE-2010-3193 Other in n/a Critical 10.0
• CVE-2009-4335 Other in n/a Critical 10.0
• CVE-2009-3473 Missing authorization in n/a Critical 10.0

All Ibm Db2 vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-623v-grh4-38m7.