CVE-2025-23048
CRITICALCVSS 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
- 7/10/2025
- Last Modified
- 11/4/2025
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.
Is CVE-2025-23048 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.