Microsoft Exchange Online authorization

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.5$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Microsoft Exchange Online. Affected by this vulnerability is an unknown functionality. The manipulation leads to an unknown weakness. This vulnerability is uniquely identified as CVE-2026-48582. No exploit exists.

Detailsinfo

A vulnerability was found in Microsoft Exchange Online (affected version unknown) and classified as critical. Using CWE to declare the problem leads to CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Missing authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.

The advisory is shared at msrc.microsoft.com. The identification of this vulnerability is CVE-2026-48582. The exploitation is known to be easy. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 06/25/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at EUVD (EUVD-2026-38090) and CERT Bund (WID-SEC-2026-2022). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Microsoft Exchange

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.6
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-862 / CWE-863 / CWE-285
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/19/2026 Advisory disclosed
06/19/2026 +0 days VulDB entry created
06/25/2026 +6 days VulDB entry last update

Sourcesinfo

Vendor: microsoft.com

Advisory: msrc.microsoft.com
Status: Confirmed

CVE: CVE-2026-48582 (🔒)
GCVE (CVE): GCVE-0-2026-48582
GCVE (VulDB): GCVE-100-372317
EUVD: 🔒
CERT Bund: WID-SEC-2026-2022 - Microsoft Exchange Online: Schwachstelle ermöglicht Privilegieneskalation

Entryinfo

Created: 06/19/2026 08:00
Updated: 06/25/2026 22:23
Changes: 06/19/2026 08:00 (48), 06/20/2026 03:33 (1), 06/22/2026 13:11 (7), 06/25/2026 22:23 (14)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

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