CVE-2025-23048
CVSS v3
9.1
CRITICAL
EPSS Score
0.1 %
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
In some mod_ssl configurations on Apache HTTP Server 2.4.35 through to 2.4.63, an access control bypass by trusted clients is possible using TLS 1.3 session resumption. Configurations are affected when mod_ssl is configured for multiple virtual hosts, with each restricted to a different set of trusted client certificates (for example with a different SSLCACertificateFile/Path setting). In such a case, a client trusted to access one virtual host may be able to access another virtual host, if SSL
Technical details
- CVSS v3 Vector
- 3.1
- Published
- 2025-07-10
- Last Modified
- 2025-11-04
Frequently asked questions
What is CVE-2025-23048?
In some mod_ssl configurations on Apache HTTP Server 2.4.35 through to 2.4.63, an access control bypass by trusted clients is possible using TLS 1.3 session resumption. Configurations are affected when mod_ssl is configured for multiple virtual hosts, with each restricted to a different set of trusted client certificates (for example with a different SSLCACertificateFile/Path setting). In such a case, a client trusted to access one virtual host may be able to access another virtual host, if SSL
Is CVE-2025-23048 actively exploited?
Active exploitation of CVE-2025-23048 has not been confirmed. The EPSS score is 0.1%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2025-23048?
CVE-2025-23048 has a CVSS v3 base score of 9.1 (CRITICAL severity), with vector string 3.1.
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