# CVE-2026-87958 — IBM Db2

> As of 2026-09-11, CVE-2026-87958 is a HIGH-severity vulnerability in IBM Db2, CVSS v3.1 8.1, EPSS 0.2% (11.3th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-87958 as of 2026-09-11; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-09-11

## What is CVE-2026-87958?

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.

The record classifies CVE-2026-87958 under weakness class [CWE-269](https://intel.threadlinqs.com/cwe/CWE-269). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction, and has high impact on integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 25 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 8.1 — HIGH (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H`)
- **EPSS (FIRST):** 0.2% probability of exploitation in the next 30 days, higher than 11.3% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 4.5/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-09-10, last modified 2026-09-11

## Is CVE-2026-87958 being exploited?

It currently carries a trending score of 32 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [IBM](https://intel.threadlinqs.com/vendors/ibm): Db2

## How to fix CVE-2026-87958

No vendor patch reference has been recorded for CVE-2026-87958 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-87958

No threat campaign in the Threadlinqs corpus currently references CVE-2026-87958, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, FIRST EPSS. Last verified by Threadlinqs on 2026-09-13.

**Vendor advisory and patch**

- [ibm.com — vendor advisory](https://www.ibm.com/support/pages/node/7286987)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-87958
Full detection coverage and IOCs for threats exploiting CVE-2026-87958 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp