Search/CVE-2026-55007
● CVE — High

CVE-2026-55007

VendormicrosoftProductexchange server, exchange server subscription editionDiscoveredSep 8, 2026UpdatedOct 5, 2026

Double free in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.

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CVSS v3.1
8.1 HIGH
EPSS
0.71%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
2
sources referencing this CVE
Related IOCs
0
seen in the same coverage
Intelligence Reports4
4 intelligence reports available

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EPSS Trend
Sep 10, 2026 → Oct 7, 2026
▼ 0.02pp
0.73% → 0.71% over 3 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityHIGH
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
ConfidentialityHIGH
IntegrityHIGH
AvailabilityHIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Connections
7 relationships
Timeline
disclosure → media coverage
Sep 8, 2026
Disclosure — published as a CVE record. · last revised by NVD Oct 5, 2026
Sep 8, 2026
advisories.ncsc.nl reports: NCSC-2026-0349 [1.00] [M/H] Kwetsbaarheden verholpen in Microsoft Exchange server
Sep 9, 2026
theregister.com reports: Microsoft breaks Patch Tuesday record with 974-CVE deluge