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CVE-2018-16793

33
FAUCET Score

CVE-2018-16793 describes a Server-Side Request Forgery (SSRF) vulnerability in Microsoft Exchange Server 2010 SP3 and earlier versions, specifically within the OWA login page's username parameter. This high-severity flaw (CVSS 8.6) allows an unauthenticated attacker to initiate requests from the server, potentially leading to information disclosure or internal network access. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the vulnerability's nature makes it a significant risk for affected systems.

Impacted Technologies

VendorProductVersion(s)CPE
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:exchange_server:2010:sp3_rollup1:*:*:*:*:*:*
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:exchange_server:2010:sp3_rollup10:*:*:*:*:*:*
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:exchange_server:2010:sp3_rollup11:*:*:*:*:*:*
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:exchange_server:2010:sp3_rollup12:*:*:*:*:*:*
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:exchange_server:2010:sp3_rollup13:*:*:*:*:*:*

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
11.33%
Probability of exploitation in next 30 days
EPSS Percentile
95.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1133 is in the 93rd percentile among its peer group of 51,551 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/149411/Rollup-18-For-Microsoft-Exchange-Server-2010-SP3-Server-Side-Request-Forgery.html
ExploitThird Party AdvisoryVDB Entry
seclists.org / fulldisclosure/2018/Sep/20
ExploitMailing ListThird Party Advisory
seclists.org / bugtraq/2018/Sep/38
ExploitIssue TrackingMailing ListThird Party Advisory
securityfocus.com / bid/105386
Third Party AdvisoryVDB Entry