{"id":"CVE-2013-5536","aliases":["EUVD-2013-5376","GHSA-rfcq-qh2v-3pxc"],"status":"published","title":"Cisco Secure Access Control System (ACS) does not properly implement an incoming-packet firewall...","description":"Cisco Secure Access Control System (ACS) does not properly implement an incoming-packet firewall rule, which allows remote attackers to cause a denial of service (process crash) via a flood of crafted packets, aka Bug ID CSCui51521.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.01497,"percentile":0.74372,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2013-10-24T10:00:00Z","modified":"2026-06-16T23:58:58Z","products":[{"vendor":"cisco","product":"secure_access_control_system"}],"references":[{"url":"http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-5536","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-5536"},{"url":"https://github.com/advisories/GHSA-rfcq-qh2v-3pxc"}],"sources":{"cve":[{"id":"CVE-2013-5536","description":"Cisco Secure Access Control System (ACS) does not properly implement an incoming-packet firewall rule, which allows remote attackers to cause a denial of service (process crash) via a flood of crafted packets, aka Bug ID CSCui51521.","status":"published","published":"2013-10-24T10:00:00Z","modified":"2024-09-16T22:02:15.546Z","updated_at":"2026-11-02T14:34:55.508771Z"}],"euvd":[{"id":"EUVD-2013-5376","description":"Cisco Secure Access Control System (ACS) does not properly implement an incoming-packet firewall rule, which allows remote attackers to cause a denial of service (process crash) via a flood of crafted packets, aka Bug ID CSCui51521.","status":"published","published":"2013-10-24T10:00:00Z","modified":"2024-09-16T22:02:15Z","updated_at":"2026-11-03T00:55:06.207566Z"}],"ghsa":[{"id":"GHSA-rfcq-qh2v-3pxc","title":"Cisco Secure Access Control System (ACS) does not properly implement an incoming-packet firewall...","description":"Cisco Secure Access Control System (ACS) does not properly implement an incoming-packet firewall rule, which allows remote attackers to cause a denial of service (process crash) via a flood of crafted packets, aka Bug ID CSCui51521.","status":"published","published":"2022-05-17T04:59:29Z","modified":"2023-01-28T05:02:49Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:43:51.142982Z"}],"nvd":[{"id":"CVE-2013-5536","description":"Cisco Secure Access Control System (ACS) does not properly implement an incoming-packet firewall rule, which allows remote attackers to cause a denial of service (process crash) via a flood of crafted packets, aka Bug ID CSCui51521.","status":"published","published":"2013-10-24T10:53:09.88Z","modified":"2026-06-16T23:58:58.63Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:40.988689Z"}]}}