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CVE-2026-45502

37
FAUCET Score

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

First published: Jun 9, 2026Last modified: Jun 9, 2026

Impacted Technologies

VendorProductVersion(s)CPE
2016CPE matchmatch criteria
cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_23:*:*:*:*:*:*
2019CPE matchmatch criteria
cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_14:*:*:*:*:*:*
2019CPE matchmatch criteria
cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_15:*:*:*:*:*:*
< 15.02.2562.043CPE matchmatch criteria
cpe:2.3:a:microsoft:exchange_server_subscription_edition:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.0MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.1
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
20.26%
Probability of exploitation in next 30 days
EPSS Percentile
97.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.2026 is in the 99th percentile among its peer group of 21,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

microsoftpatch availablevia msrc
Product: Microsoft Exchange Server 2019 Cumulative Update 14Fixed in: 15.02.1544.041
microsoftpatch availablevia msrc
Product: Microsoft Exchange Server 2019 Cumulative Update 15Fixed in: 15.02.1748.046
microsoftpatch availablevia msrc
Product: Microsoft Exchange Server 2016 Cumulative Update 23Fixed in: 15.01.2507.069
microsoftpatch availablevia msrc
Product: Microsoft Exchange Server Subscription Edition RTMFixed in: 15.02.2562.043
View patch
microsoftvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

microsoft2026-Jun/CVE-2026-45502Important

Microsoft Exchange Server Information Disclosure Vulnerability

Jun 9, 2026

References

msrc.microsoft.com / update-guide/vulnerability/CVE-2026-45502
Vendor Advisory