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CVE-2026-55005: exchange server 2016 · update cumulative_update_23, 2019 · update cumulative_update_14, 2019 · update…
CVE-2026-55005. CVSS 3.1 base score 8.8 (HIGH, Vendor/CNA). EPSS 0.0101 (percentile 0.62199), scored 13-Oct-2026.
Affected technology
exchange server · 2016 · update cumulative_update_23
microsoft
exchange server · 2019 · update cumulative_update_14
microsoft
exchange server · 2019 · update cumulative_update_15
microsoft
exchange server subscription edition · before 15.02.2562.045 (exclusive)
microsoft
Microsoft Exchange Server 2016 Cumulative Update 23 · 15.01.0.0 to before 15.01.2507.071
Microsoft
Microsoft Exchange Server 2019 Cumulative Update 14 · 15.02.0.0 to before 15.02.1544.043
Microsoft
Microsoft Exchange Server 2019 Cumulative Update 15 · 15.02.0.0 to before 15.02.1748.048
Microsoft
Microsoft Exchange Server Subscription Edition RTM · 15.02.0.0 to before 15.02.2562.045
Microsoft
Component: Not specified by the source
Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required
What an attacker can do
An authorized attacker can execute code over a network. Vendor/CNA’s CVSS 3.1 assessment (base score 8.8/10) rates confidentiality, integrity and availability impact as high.
- CWE
- CWE-122
- CCR priority
- 35.5 /100 (P4)
- CVSS 3.1
- 8.8 /10 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · Vendor/CNA
- EPSS
- 0.0101 · percentile 0.62199 · 2026-10-13
- KEV
- no
Provenance
- NVD CVE API 2.0 · Source record · observed 2026-10-15 01:07:31.726917+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-55005.html