CVE Tools

CVE-2026-48579

Microsoft Exchange Online Information Disclosure Vulnerability

Published: Jun 4, 2026Updated: Jun 5, 2026 Sources: CVE List NVD BDUCWE-285

No Known Exploits

Patch Available

Description

Improper authorization in Microsoft Exchange Online allows an unauthorized attacker to disclose information over a network.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:NAvailability

None

Open in CVSS calculator →

Weaknesses

Affected Products

commercial·USaka Microsoft, microsoft corporation

Microsoft Exchange OnlineOn-premSaaS Service

Operating Systems / windows

exchange onlineSaaSSaaS Service

and 1 more affected products View all →

Exploitability

Official Patch Available

Is your org exposed to CVE-2026-48579?We can run the check for you — a free external exposure review, no install. Check my exposure

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-48579

msrc.microsoft.com

News mentions

2

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-48579 and every CVE in our database. Create a free account — no credit card required.

Create Free Account

Plain-language analysis

Impact assessment and exploitation scenario in plain English

Attack graph visualization

Interactive attack path and kill chain mapping

Exploit details & PoC links

ExploitDB, Metasploit, GitHub PoCs with direct links

Nuclei scanner templates

Ready-to-use vulnerability scanner templates

Full remediation guide

Patch instructions, workarounds, and compliance impact

Interactive AI chat

Ask questions about this vulnerability in natural language

Related vulnerabilities

Semantically similar CVEs and attack patterns

REST API & MCP access

Integrate vulnerability data into your workflows