MEDIUM

CVE-2026-33523

CVSS v3

6.5

MEDIUM

EPSS Score

0.2%

exploit probability

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

Microsoft Security Update (CVE-2026-33523)

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Published
5/7/2026
MSRC Title
Apache HTTP Server: multiple modules: HTTP response splitting forwarding malicious status line

Frequently asked questions

What is CVE-2026-33523?

Microsoft Security Update (CVE-2026-33523)

Is CVE-2026-33523 actively exploited?

Active exploitation of CVE-2026-33523 has not been confirmed. The EPSS score is 0.2%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-33523?

CVE-2026-33523 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

Is CVE-2026-33523 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.

Check an IPSearch CVEs
Back to CVE Database