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CVE-2018-8273

48
FAUCET Score

CVE-2018-8273 is a critical buffer overflow vulnerability in Microsoft SQL Server that could enable remote code execution. With a CVSS score of 9.8, it presents a severe risk, allowing unauthenticated attackers to achieve full compromise (confidentiality, integrity, availability) with low attack complexity over the network. While there is no evidence of active exploitation in the wild or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, indicating awareness and potential for future exploitation. It was addressed in Microsoft's August 2018 Patch Tuesday.

Impacted Technologies

VendorProductVersion(s)CPE
2016CPE matchmatch criteria
cpe:2.3:o:microsoft:sql_server:2016:sp1:*:*:*:*:x64:*
2016CPE matchmatch criteria
cpe:2.3:o:microsoft:sql_server:2016:sp2:*:*:*:*:x64:*
2017CPE matchmatch criteria
cpe:2.3:o:microsoft:sql_server:2017:*:*:*:*:*:x64:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
29.21%
Probability of exploitation in next 30 days
EPSS Percentile
98.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.2921 is in the 95th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Microsoft SQL Server 2016 for x64-based Systems Service Pack 2 (CU)
View patch
microsoftpatch availablevia msrc
Product: Microsoft SQL Server 2016 for x64-based Systems Service Pack 2 (GDR)
View patch
microsoftpatch availablevia msrc
Product: Microsoft SQL Server 2016 for x64-based Systems Service Pack 1 (GDR)
View patch
microsoftpatch availablevia msrc
Product: Microsoft SQL Server 2016 for x64-based Systems Service Pack 1 (CU)
View patch
microsoftpatch availablevia msrc
Product: Microsoft SQL Server 2017 for x64-based Systems (GDR)
View patch
microsoftpatch availablevia msrc
Product: Microsoft SQL Server 2017 for x64-based Systems (CU)
View patch

Vendor Advisories (1)

microsoft2018-Aug/CVE-2018-8273Critical

Microsoft SQL Server Remote Code Execution Vulnerability

Aug 14, 2018

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2018-8273
PatchVendor Advisory
securityfocus.com / bid/104967
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041467
Third Party AdvisoryVDB Entry