{"id":"CVE-2013-6694","aliases":["EUVD-2013-6496","GHSA-6x3j-7frx-v679"],"status":"published","title":"The IPSec implementation in Cisco IOS allows remote attackers to cause a denial of service (MTU...","description":"The IPSec implementation in Cisco IOS allows remote attackers to cause a denial of service (MTU change and tunnel-session drop) via crafted ICMP packets, aka Bug ID CSCul29918.","severity":{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01084,"percentile":0.65457,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2013-11-22T17:00:00Z","modified":"2026-06-17T00:00:48Z","products":[{"vendor":"cisco","product":"ios"}],"references":[{"url":"http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-6694","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-6694"},{"url":"https://github.com/advisories/GHSA-6x3j-7frx-v679"}],"sources":{"cve":[{"id":"CVE-2013-6694","description":"The IPSec implementation in Cisco IOS allows remote attackers to cause a denial of service (MTU change and tunnel-session drop) via crafted ICMP packets, aka Bug ID CSCul29918.","status":"published","published":"2013-11-22T17:00:00Z","modified":"2024-08-06T17:46:22.437Z","updated_at":"2026-11-02T14:34:57.195423Z"}],"euvd":[{"id":"EUVD-2013-6496","description":"The IPSec implementation in Cisco IOS allows remote attackers to cause a denial of service (MTU change and tunnel-session drop) via crafted ICMP packets, aka Bug ID CSCul29918.","status":"published","published":"2013-11-22T17:00:00Z","modified":"2024-08-06T17:46:22Z","updated_at":"2026-11-03T01:56:25.766525Z"}],"ghsa":[{"id":"GHSA-6x3j-7frx-v679","title":"The IPSec implementation in Cisco IOS allows remote attackers to cause a denial of service (MTU...","description":"The IPSec implementation in Cisco IOS allows remote attackers to cause a denial of service (MTU change and tunnel-session drop) via crafted ICMP packets, aka Bug ID CSCul29918.","status":"published","published":"2022-05-17T04:57:18Z","modified":"2023-01-28T05:02:43Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:43:50.187003Z"}],"nvd":[{"id":"CVE-2013-6694","description":"The IPSec implementation in Cisco IOS allows remote attackers to cause a denial of service (MTU change and tunnel-session drop) via crafted ICMP packets, aka Bug ID CSCul29918.","status":"published","published":"2013-11-22T19:55:09.89Z","modified":"2026-06-17T00:00:48.897Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:40.988689Z"}]}}