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CVE-2018-8533

41
FAUCET Score

CVE-2018-8533 is an information disclosure vulnerability in Microsoft SQL Server Management Studio (SSMS) versions 17.9 and 18.0, stemming from improper parsing of malicious XML content with external entity references. This medium-severity vulnerability has a CVSS score of 5.5, indicating that an attacker could achieve high confidentiality impact with low attack complexity, requiring user interaction. While not on CISA's KEV catalog, public exploit code exists on ExploitDB, and it has garnered notable community discussion and media coverage, suggesting awareness among threat actors.

Impacted Technologies

VendorProductVersion(s)CPE
17.9CPE matchmatch criteria
cpe:2.3:a:microsoft:sql_server_management_studio:17.9:*:*:*:*:*:*:*
18.0CPE matchmatch criteria
cpe:2.3:a:microsoft:sql_server_management_studio:18.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
23.37%
Probability of exploitation in next 30 days
EPSS Percentile
97.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-45583 · Oct 11, 2018
This CVE's current EPSS score of 0.2337 is in the 100th percentile among its peer group of 5,758 CVEs.

Social Chatter

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

Media Mentions

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

Remediation

Patch Available

Vendor Patches (1)

microsoftpatch availablevia nvd_reference
View patch

Vendor Advisories (1)

microsoft2018-Oct/CVE-2018-8533Moderate

SQL Server Management Studio Information Disclosure Vulnerability

Oct 9, 2018

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2018-8533
PatchVendor Advisory
exploit-db.com / exploits/45583
ExploitThird Party AdvisoryVDB Entry
securityfocus.com / bid/105476
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041826
Third Party AdvisoryVDB Entry