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CVE-2018-8604

19
FAUCET Score

CVE-2018-8604 is a tampering vulnerability in Microsoft Exchange Server that arises from improper handling of profile data. This medium-severity vulnerability (CVSS 4.3) allows an authenticated attacker to modify data with low impact on integrity, requiring no user interaction. While not actively exploited and lacking public exploit code, it garnered some community discussion and was mentioned in a December 2018 Patch Tuesday article.

Impacted Technologies

VendorProductVersion(s)CPE
2016CPE matchmatch criteria
cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_10:*:*:*:*:*:*
2016CPE matchmatch criteria
cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_11:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.3MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.41%
Probability of exploitation in next 30 days
EPSS Percentile
82.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0241 is in the 93rd 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 (3)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Microsoft Exchange Server 2016 Cumulative Update 10
View patch
microsoftpatch availablevia msrc
Product: Microsoft Exchange Server 2016 Cumulative Update 11
View patch

Vendor Advisories (1)

microsoft2018-Dec/CVE-2018-8604Important

Microsoft Exchange Server Tampering Vulnerability

Dec 11, 2018

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2018-8604
PatchVendor Advisory
securityfocus.com / bid/106103
Third Party AdvisoryVDB Entry