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CVE-2018-8527· NVD / CVE Program· CNA microsoft

An information disclosure vulnerability exists in Microsoft SQL Server Management Studio (SSMS) when parsing a malicious XEL file containing

An information disclosure vulnerability exists in Microsoft SQL Server Management Studio (SSMS) when parsing a malicious XEL file containing a reference to an external entity, aka "SQL Server Management Studio Information Disclosure Vulnerability." This affects SQL Server Management Studio 17.9, SQL Server Management Studio 18.0. This CVE ID is unique from CVE-2018-8532, CVE-2018-8533.

MediumCVSS 5.5 · v3.0—Proof of concept No fix recorded
Published
Oct 10, 2018
Updated
Jun 16, 2026
EPSS
23.4% · 98th percentile
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Report tools

JSON

Action score

29

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
7 / 30 · 23.4%

Affected systems

VendorProduct
microsoftsql server management studio

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • microsoft sql server management studio17.9
  • microsoft sql server management studio18.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (microsoft). Independent of NVD's CPE analysis and usually ahead of it.

  • Microsoft SQL Server Management Studio 17.9

    • SQL Server Management Studio 17.9affected

  • Microsoft SQL Server Management Studio 18.0

    • (Preview 4)affected

Same product

microsoft: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-29803Visual Studio Tools for Applications and SQL Server Management Studio Elevation of Privilege Vulnerability
    29Monitor
  • CVE-2018-8533An information disclosure vulnerability exists in Microsoft SQL Server Management Studio (SSMS) when parsing malicious XML content containin
    29Monitor
  • CVE-2018-8532An information disclosure vulnerability exists in Microsoft SQL Server Management Studio (SSMS) when parsing a malicious XMLA file containin
    29Monitor
  • CVE-2019-1376An information disclosure vulnerability exists in Microsoft SQL Server Management Studio (SSMS) when it improperly enforces permissions, aka
    28Monitor
  • CVE-2019-1313An information disclosure vulnerability exists in Microsoft SQL Server Management Studio (SSMS) when it improperly enforces permissions, aka
    28Monitor
  • CVE-2020-1455Microsoft SQL Server Management Studio Denial of Service Vulnerability
    21Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Exploit-DB entry ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Exploit-DB entrylocal2018-10-11

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. First PoC+1 d
  3. TodaySep 30, 2026+2912 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-611 · Improper Restriction of XML External Entity Reference

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

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Noroxi analysis

No Noroxi analysis for this record yet

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Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records