CVE-2026-66816

MEDIUM
Published Sep 8, 2026 Modified Sep 8, 2026 CWE-778

Description

Insufficient logging in SQL Server allows an authorized attacker to bypass a security feature over a network.

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CVSS v3.1 Score

6.5
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploit Prediction

0.0071
Probability of exploitation
0.52%
Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-778 CWE-778

References

Frequently Asked Questions

What is CVE-2026-66816? +
Insufficient logging in SQL Server allows an authorized attacker to bypass a security feature over a network. It has a CVSS v3.1 base score of 6.5 (MEDIUM).
How severe is CVE-2026-66816? +
CVE-2026-66816 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0071, placing it in the 1th percentile for exploitation probability.
How do I check if I'm vulnerable to CVE-2026-66816? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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