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CVE-2018-16794

31
FAUCET Score

CVE-2018-16794 describes a Server-Side Request Forgery (SSRF) vulnerability in Microsoft Active Directory Federation Services (ADFS) 4.0 on Windows Server 2016 and previous versions, specifically exploitable via the txtBoxEmail parameter in /adfs/ls. This vulnerability carries a high CVSS score of 8.6, indicating a critical risk due to its network-based attack vector, low attack complexity, and high impact on integrity without requiring user interaction. Despite its severity, there is no evidence of active exploitation, publicly available exploit code in common repositories like Metasploit or ExploitDB, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.0CPE matchmatch criteria
cpe:2.3:a:microsoft:active_directory_federation_services:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.6HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
4.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
8.03%
Probability of exploitation in next 30 days
EPSS Percentile
94.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0803 is in the 90th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/149376/Microsoft-ADFS-4.0-Windows-Server-2016-Server-Side-Request-Forgery.html
ExploitThird Party AdvisoryVDB Entry
seclists.org / fulldisclosure/2018/Sep/13
ExploitMailing ListThird Party Advisory
seclists.org / bugtraq/2018/Sep/26
ExploitMailing ListThird Party Advisory
securityfocus.com / bid/105378
Third Party AdvisoryVDB Entry