Authentication bypass by capture-replay in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com

Timeline

Detection, updates, and resolution for this record.

1. Aug 11, 2026 · NIST NVD

   Detected

   Authentication bypass by capture-replay in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

2. Oct 14, 2026 · NIST NVD

   Updated

   Authentication bypass by capture-replay in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

Affected

• cpe microsoft/exchange server2016

Sources

• CVE.orgVulnerability recordCVE-2026-62911

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-62911

  30-day exploitation probability 0.7%

  first.org
• NIST NVDVulnerability recordCVE-2026-62911

  Authentication bypass by capture-replay in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

  nvd.nist.gov

References

• Reference · github.com
• Patch · msrc.microsoft.com