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Project

Microsoft Exchange Server

Microsoft's on-premises email and calendaring server software, widely deployed in enterprises and a frequent target of critical security vulnerabilities.

Known aliases

  • Exchange
  • Exchange Server
  • Exchange Server Online

Current stories

securityConfirmed6 publishers

US offers $10 million for Hafnium suspect Zhang Yu after his alleged partner's extradition

State Department offers $10 million for information on the whereabouts of Zhang Yu, a Shanghai company director charged in the Hafnium hacking campaign. The bounty keeps the US case against two named men moving years after June 2021, when the indictment says the charged intrusions ended.

Perspective Coverage

6 publishers
Builder
Builder 14%
Operator
Operator 81%
Investor
Investor 5%

Reality

Evidence72
Adoption
Not scored
Hype gap+15
Incentives55
Confidence70
securityConfirmed3 publishers

Out-of-band Exchange Server patch closes a flaw that exposes colleagues' mail to signed-in attackers

Microsoft issued an out-of-band Exchange Server fix for CVE-2026-96940, a bug letting signed-in attackers read colleagues' mail and attachments. The company expects the flaw to be consistently exploitable, so on-premises admins have good reason to install it ahead of the next maintenance window.

Perspective Coverage

3 publishers
Builder
Builder 15%
Operator
Operator 80%
Investor
Investor 5%

Reality

Evidence74
Adoption
Not scored
Hype gap0
Incentives
Not scored
Confidence70
securityConfirmed3 publishers

NightEagle is entering Russian corporate VPNs with valid stolen credentials

Kaspersky's incident response team says the group, previously seen working against targets in Asia, logged into VPNs from Cloudflare WARP and European hosting addresses, then ran the GhostContainer backdoor in memory on Exchange.

Perspective Coverage

3 publishers
Builder
Builder 20%
Operator
Operator 70%
Investor
Investor 10%

Reality

Evidence60
Adoption
Not scored
Hype gap+5
Incentives40
Confidence58
securityOne report1 publisher

Microsoft's record 964-CVE Patch Tuesday includes two exploited zero-days

Tenable's tally for September 2026 is the largest Patch Tuesday on record. It shipped with two bugs already exploited in the wild. The other 962 sit on the calendar as a scheduling problem, and the severity ratings do not sort them by urgency.

Publishers:tenable.com

Reality

Evidence55
Adoption25
Hype gap+20
Incentives60
Confidence50
buildOne report1 publisher

IMDSv1 turns an SSRF finding into unauthenticated credential theft in one hop

F5 Labs logged 69,433 probes at 169.254.169.254 in March 2025 using six ordinary parameter names. Whether any of them mattered was settled at instance launch, before any input validation ever ran.

Publishers:dev.to

Reality

Evidence58
Adoption32
Hype gap+22
Incentives42
Confidence47
securityOne report1 publisher

Microsoft shipped nine cloud fixes that cost its customers nothing to deploy

The nine flaws Microsoft fixed in Entra ID, Cosmos DB and six other services never reached a patch queue. The week's real remediation cost sat instead with 21,000 exposed Exchange servers and one Minnesota county.

Publishers:securityweek.com

Reality

Evidence45
Adoption55
Hype gap−10
Incentives60
Confidence50
securityOne report1 publisher

August's 398-CVE Patch Tuesday moves the bottleneck to the test bench

Only one of the 398 CVEs Microsoft fixed in August was confirmed exploited, and the SharePoint chain now hitting servers turns on a July patch, which puts exposure on cycle lag rather than on ranking.

Reality

Evidence33
Adoption44
Hype gap+16
Incentives56
Confidence38
securityConfirmed3 publishers

Public exploit code for CVE-2026-62911 is outpacing patching on 21,899 exposed Exchange servers

Microsoft patched the Exchange authentication bypass on August 11. Shadowserver's September 1 scan still counts 21,899 internet-facing servers unpatched, and NCSC-NL says working exploit code for full mailbox takeover is circulating.

Perspective Coverage

3 publishers
Builder
Builder 20%
Operator
Operator 68%
Investor
Investor 12%

Reality

Evidence72
Adoption30
Hype gap+18
Incentives70
Confidence68