Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2021-31196 is a remote code execution vulnerability in Microsoft Exchange Server. Microsoft classified it as Important severity and assigned CVSS 3.0 7.2 with vector AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H, indicating the issue is reachable over the network, requires low attack complexity and no user interaction, but does require high privileges. The provided content does not identify the specific vulnerable component or function within Exchange Server, so more granular technical details are currently not available.
Are you exposed to this one?
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Microsoft Exchange Server remote code execution vulnerability addressed in Microsoft's July updates.
A Microsoft Exchange Server remote code execution vulnerability rated Important.
A Microsoft Exchange vulnerability included in the ProxyOracle exploit chain downloaded by UNC3569.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.