{"cve":"CVE-2024-20502","nvd":{"published":"2024-10-02T19:15:14.780","modified":"2026-06-17T07:07:26.873","status":"Modified","description":"A vulnerability in the Cisco AnyConnect VPN server of Cisco Meraki MX and Cisco Meraki Z Series Teleworker Gateway devices could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device.\r\n\n This vulnerability is due to insufficient resource management while establishing SSL VPN sessions. An attacker could exploit this vulnerability by sending a series of crafted HTTPS requests to the VPN server of an affected device. A successful exploit could allow the attacker to cause the Cisco AnyConnect VPN server to stop accepting new connections, preventing new SSL VPN connections from being established. Existing SSL VPN sessions are not impacted.\r\n\n Note: When the attack traffic stops, the Cisco AnyConnect VPN server recovers gracefully without requiring manual intervention.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-400"],"references":["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-meraki-mx-vpn-dos-QTRHzG2"],"products":["cisco:meraki_mx100_firmware","cisco:meraki_mx105_firmware","cisco:meraki_mx250_firmware","cisco:meraki_mx400_firmware","cisco:meraki_mx450_firmware","cisco:meraki_mx600_firmware","cisco:meraki_mx64_firmware","cisco:meraki_mx64w_firmware","cisco:meraki_mx65_firmware","cisco:meraki_mx65w_firmware","cisco:meraki_mx67_firmware","cisco:meraki_mx67c_firmware","cisco:meraki_mx67w_firmware","cisco:meraki_mx68_firmware","cisco:meraki_mx68cw_firmware","cisco:meraki_mx68w_firmware","cisco:meraki_mx75_firmware","cisco:meraki_mx84_firmware","cisco:meraki_mx85_firmware","cisco:meraki_mx95_firmware","cisco:meraki_vmx_firmware","cisco:meraki_z3_firmware","cisco:meraki_z3c_firmware","cisco:meraki_z4_firmware","cisco:meraki_z4c_firmware"],"source":"nvd","synced_at":"2026-10-19T21:55:31.737901711+00:00"},"epss":{"cve":"CVE-2024-20502","score":0.0052,"percentile":0.44184,"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."]}