Quick answers
- Is CVE-2026-85838 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-85838 being exploited in the wild.
- How severe is CVE-2026-85838?
- High severity, with a CVSS score of 8.8, published 10 November 2026.
- Which products and versions are affected?
- Microsoft WDAC OLE DB provider for SQL.
- Is there a fix for CVE-2026-85838?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-85838 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-85838?
- Check whether you run Microsoft WDAC OLE DB provider for SQL. 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 heap-based buffer overflow exists in the WDAC OLE DB provider for SQL, exploitable over the network without requiring prior authentication. An attacker can send specially crafted network requests to trigger the overflow and execute arbitrary code in the context of the vulnerable application.
Affected products
- Microsoft WDAC OLE DB provider for SQL
Timeline
- 2026-11-10: disclosed