Search/CVE-2021-42305
● CVE — Medium

CVE-2021-42305

Microsoft Exchange Server Spoofing Vulnerability

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CVSS v3.1
6.5 MEDIUM
EPSS
7.87%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
EPSS Trend
Aug 16, 2026 → Sep 4, 2026
▼ 0.24pp
8.11% → 7.87% over 4 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionREQUIRED
ScopeUNCHANGED
ConfidentialityNONE
IntegrityHIGH
AvailabilityNONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Connections
1 relationships
Timeline
disclosure → media coverage
Nov 10, 2021
Disclosure — published as a CVE record. · last revised by NVD Aug 19, 2026