Quick answers
- Is CVE-2026-69559 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-69559 being exploited in the wild.
- How severe is CVE-2026-69559?
- Medium severity, with a CVSS score of 5.8, published 8 September 2026.
- Which products and versions are affected?
- Microsoft Teams for Android <UNKNOWN>.
- Is there a fix for CVE-2026-69559?
- 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-2026-69559 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-69559?
- Check whether you run Microsoft Teams for Android at an affected version. 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
The vulnerability is an origin validation error in Microsoft Teams for Android that fails to properly verify the source of requests or data. This validation bypass allows an authorized attacker with network access to disclose information by circumventing origin-based security controls. The attack requires prior authentication to the Teams application. The vulnerability can be exploited over the network without additional user interaction beyond the initial authorization. A patch is expected to be available through Microsoft's regular security update cycle.
Affected products
- Microsoft Teams for Android <UNKNOWN>
Timeline
- 2026-09-08: disclosed