Quick answers
- Is CVE-2026-85873 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-85873 being exploited in the wild.
- How severe is CVE-2026-85873?
- Medium severity, with a CVSS score of 6.5, published 13 October 2026.
- Which products and versions are affected?
- Microsoft Skype for Business; Microsoft Lync.
- Is there a fix for CVE-2026-85873?
- 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-2026-85873 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-85873?
- Check whether you run Microsoft Lync or Microsoft Skype for Business. 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
An improper authorization vulnerability in Skype for Business and Lync allows an authenticated attacker to escalate privileges via network-based exploitation. The vulnerability requires valid user credentials and network access to the affected service. A successful attack could grant the attacker elevated permissions within the communication platform.
Affected products
- Microsoft Skype for Business
- Microsoft Lync
Timeline
- 2026-10-13: disclosed