{"cve":"CVE-2024-3661","nvd":{"published":"2024-05-06T19:15:11.027","modified":"2026-06-17T07:44:45.760","status":"Analyzed","description":"DHCP can add routes to a client’s routing table via the classless static route option (121). VPN-based security solutions that rely on routes to redirect traffic can be forced to leak traffic over the physical interface. An attacker on the same local network can read, disrupt, or possibly modify network traffic that was expected to be protected by the VPN.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","score":7.6},"cwes":["CWE-306","CWE-501"],"references":["https://arstechnica.com/security/2024/05/novel-attack-against-virtually-all-vpn-apps-neuters-their-entire-purpose/","https://bst.cisco.com/quickview/bug/CSCwk05814","https://datatracker.ietf.org/doc/html/rfc2131#section-7","https://datatracker.ietf.org/doc/html/rfc3442#section-7","https://fortiguard.fortinet.com/psirt/FG-IR-24-170"],"products":["cisco:anyconnect_vpn_client","cisco:secure_client","citrix:secure_access_client","f5:big-ip_access_policy_manager","fortinet:forticlient","paloaltonetworks:globalprotect","watchguard:ipsec_mobile_vpn_client","watchguard:mobile_vpn_with_ssl","zscaler:client_connector"],"source":"nvd","synced_at":"2026-10-19T21:49:23.840078609+00:00"},"epss":{"cve":"CVE-2024-3661","score":0.04063,"percentile":0.90665,"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."]}