Home/CVE/Server-side request forgery (ssrf) in Microsoft Exchange allows an authorized attacker to elevate privileges over a netw
CVE

CVE-2026-26137

Server-side request forgery (ssrf) in Microsoft Exchange allows an authorized attacker to elevate privileges over a netw

Server-side request forgery (ssrf) in Microsoft Exchange allows an authorized attacker to elevate privileges over a network.

CRITICAL · CVSS 9.9 EPSS 0.00043
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-918Server-Side Request Forgery (SSRF)
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Affected Products & Versions

1
microsoft 365 copilot chatall versions
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Scoring & Timeline

9.9
CRITICAL · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD19 Mar 2026 · 09:17 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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Vendor Advisories

1
msrcCVE-2026-26137Elevation of Privilege
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