Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
User interface (ui) misrepresentation of critical information in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
STABLE
If you run products in this scope, you should treat this CVE as relevant to your environment.
2 versions affected across 2 products
| Date | Total | Labels |
|---|
| 2026-02-10 | 2 | General2 |
| 2026-02-26 | 1 | General1 |
CVE-2026-21527 User interface (ui) misrepresentation of critical information in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network. https://www.cve.org/CVERecord?id=CVE-2026-21527
Post summary
CVE-2026-21527 is a UI misrepresentation vulnerability in Microsoft Exchange Server that allows an attacker to spoof information over a network. No exploit, patch, or active exploitation details are provided.
CVE-2026-21527 | Microsoft Exchange Server Spoofing Vulnerability https://www.aakashrahsi.online/post/cve-2026-21527 https://t.co/tk1xlLPUgW
Post summary
The tweet references a CVE for a Microsoft Exchange Server spoofing vulnerability but provides no further details or evidence of exploitation, patches, or technical specifics.
CVE-2026-21527 Microsoft Exchange Server Spoofing Vulnerability http://dlvr.it/TQtG4q
Post summary
A brief post cites CVE-2026-21527 as a Microsoft Exchange spoofing vulnerability, but provides no additional technical context, evidence of exploitation, or remediation steps.
4 of 4 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | microsoft | exchange_server | 2016 | - | - |
| App | microsoft | exchange_server | 2019 | - | - |
| App | microsoft | exchange_server | 2019 | - | - |
| App | microsoft | exchange_server_subscription_edition | - | - | - |