Vulnerability in Apple macOS
CVE-2025-20126
A vulnerability in certification validation routines of Cisco ThousandEyes Endpoint Agent for macOS and RoomOS could allow an unauthenticated, remote attacker to intercept or manipulate metrics information. This vulnerability exists because the affected software does not properly validate certificates for hosted metrics services. An on-path attacker could exploit this vulnerability by intercepting network traffic using a crafted certificate. A successful exploit could allow the attacker to masquerade as a trusted host and monitor or change communications between the remote metrics service and the vulnerable client.
Vulnerability class: Improper Certificate Validation
EPSS: 0.002 (6.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.
Affected products
Weakness classification (CWE)
References
- psirt@cisco.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-20126?
- CVE-2025-20126 is a medium-severity vulnerability in Apple macOS, classified under Improper Certificate Validation. CVSS score: 4.8/10. Published 2025-01-08.
- How severe is CVE-2025-20126?
- Medium severity. CVSS v3 base score is 4.8 out of 10.