{"cve":"CVE-2023-36671","nvd":{"published":"2023-08-09T23:15:10.650","modified":"2026-06-17T06:06:48.243","status":"Modified","description":"An issue was discovered in the Clario VPN client through 5.9.1.1662 for macOS. The VPN client insecurely configures the operating system such that all IP traffic to the VPN server's IP address is sent in plaintext outside the VPN tunnel even if this traffic is not generated by the VPN client. This allows an adversary to trick the victim into sending plaintext traffic to the VPN server's IP address and thereby deanonymize the victim. NOTE: the tunnelcrack.mathyvanhoef.com website uses this CVE ID to refer more generally to \"ServerIP attack for only traffic to the real IP address of the VPN server\" rather than to only Clario.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","score":6.3},"cwes":["CWE-319"],"references":["https://clario.co/vpn-for-mac/","https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0015","https://tunnelcrack.mathyvanhoef.com/details.html","https://clario.co/vpn-for-mac/","https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0015"],"products":["clario:vpn"],"source":"nvd","synced_at":"2026-10-19T21:39:14.809778102+00:00"},"epss":{"cve":"CVE-2023-36671","score":0.00254,"percentile":0.17055,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}