Live › vulnerability › CVE-2021-31196
Go to dashboardMicrosoft Exchange Server has an information disclosure flaw that CISA lists as known exploited. The description also says it allows remote code execution, so the sources conflict on impact.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Microsoft Exchange Server | vendor | – | – |
| microsoft exchange server | vendor | = 2013 | – |
| microsoft exchange server | vendor | = 2016 | – |
| microsoft exchange server | vendor | = 2019 | – |
Unknown from the sources.
Apply the Microsoft mitigations per vendor instructions, or stop using the product if mitigations are unavailable (per CISA required action).
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Microsoft Exchange Server contains an information disclosure vulnerability that allows for remote code execution.
CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
This page as .md · .json · in your agent: get_signal("CVE-2021-31196")
CISA KEV catalog, Creative Commons 0 · NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.