CVE-2026-62915: Microsoft Exchange Server Security Feature Bypass Vulnerability

Published Aug 11, 2026
·
Updated

Microsoft Exchange Server Security Feature Bypass Vulnerability

Other sources

Missing authorization in Microsoft Exchange Server allows an authorized attacker to bypass a security feature over a network.

Microsoft

Affected Software

42 affected componentsFixes available
Microsoft Exchange Server 2019=15
15.02.1748.049
Microsoft Exchange Server 2019=14
15.02.1544.044
Microsoft Exchange Server Subscription Edition RTM<15.02.2562.046
15.02.2562.046
Microsoft Exchange Server 2016=23
15.01.2507.072
Microsoft Exchange Server=2016
Microsoft Exchange Server=2016-cumulative_update_1
Microsoft Exchange Server=2016-cumulative_update_10
Microsoft Exchange Server=2016-cumulative_update_11
Microsoft Exchange Server=2016-cumulative_update_12
Microsoft Exchange Server=2016-cumulative_update_13
Microsoft Exchange Server=2016-cumulative_update_14
Microsoft Exchange Server=2016-cumulative_update_15
Microsoft Exchange Server=2016-cumulative_update_16
Microsoft Exchange Server=2016-cumulative_update_17
Microsoft Exchange Server=2016-cumulative_update_18
Microsoft Exchange Server=2016-cumulative_update_19
Microsoft Exchange Server=2016-cumulative_update_2
Microsoft Exchange Server=2016-cumulative_update_20
Microsoft Exchange Server=2016-cumulative_update_21
Microsoft Exchange Server=2016-cumulative_update_22
Microsoft Exchange Server=2016-cumulative_update_3
Microsoft Exchange Server=2016-cumulative_update_4
Microsoft Exchange Server=2016-cumulative_update_5
Microsoft Exchange Server=2016-cumulative_update_6
Microsoft Exchange Server=2016-cumulative_update_7
Microsoft Exchange Server=2016-cumulative_update_8
Microsoft Exchange Server=2016-cumulative_update_9
Microsoft Exchange Server=2019
Microsoft Exchange Server=2019-cumulative_update_1
Microsoft Exchange Server=2019-cumulative_update_10
Microsoft Exchange Server=2019-cumulative_update_11
Microsoft Exchange Server=2019-cumulative_update_12
Microsoft Exchange Server=2019-cumulative_update_13
Microsoft Exchange Server=2019-cumulative_update_2
Microsoft Exchange Server=2019-cumulative_update_3
Microsoft Exchange Server=2019-cumulative_update_4
Microsoft Exchange Server=2019-cumulative_update_5
Microsoft Exchange Server=2019-cumulative_update_6
Microsoft Exchange Server=2019-cumulative_update_7
Microsoft Exchange Server=2019-cumulative_update_8
Microsoft Exchange Server=2019-cumulative_update_9
Microsoft Exchange Server Subscription Edition<15.02.2562.046

Event History

Aug 11, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
Description
CVE Published
via MITRE·05:04 PM
Data Sourced
via MITRE·05:04 PM
DescriptionSeverity
Data Sourced
via NVD·05:18 PM
RemedyDescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2026-62915?

The severity of CVE-2026-62915 is classified as medium with a score of 6.5.

2

How do I fix CVE-2026-62915?

To fix CVE-2026-62915, apply the available patch from Microsoft for the affected Exchange Server versions.

3

What systems are affected by CVE-2026-62915?

CVE-2026-62915 affects Microsoft Exchange Server 2019, Microsoft Exchange Server Subscription Edition RTM, Microsoft Exchange Server 2016, and Microsoft Exchange Server Subscription Edition.

4

What type of vulnerability is CVE-2026-62915?

CVE-2026-62915 is a security feature bypass vulnerability in Microsoft Exchange Server.

5

Can CVE-2026-62915 be exploited remotely?

Yes, CVE-2026-62915 can be exploited remotely as it allows an authorized attacker to bypass security features over a network.

Contact

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