FKIE_CVE-2025-20362
Vulnerability from fkie_nvd - Published: 2025-09-25 16:15 - Updated: 2026-10-18 21:10
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
8.6 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
8.6 (High) - CVSS:3.1/
Summary
Update: On November 5, 2025, Cisco became aware of a new attack variant against devices running Cisco Secure ASA Software or Cisco Secure FTD Software releases that are affected by CVE-2025-20333 and CVE-2025-20362. This attack can cause unpatched devices to unexpectedly reload, leading to denial of service (DoS) conditions. Cisco strongly recommends that all customers upgrade to the fixed software releases that are listed in the Fixed Software ["#fs"] section of this advisory.
A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to access restricted URL endpoints that are related to remote access VPN that should otherwise be inaccessible without authentication.
This vulnerability is due to improper validation of user-supplied input in HTTP(S) requests. An attacker could exploit this vulnerability by sending crafted HTTP requests to a targeted web server on a device. A successful exploit could allow the attacker to access a restricted URL without authentication.
References
Impacted products
{
"affected": [
{
"affectedData": [
{
"product": "Cisco Secure Firewall Adaptive Security Appliance (ASA) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "9.8.1"
},
{
"status": "affected",
"version": "9.8.1.5"
},
{
"status": "affected",
"version": "9.8.1.7"
},
{
"status": "affected",
"version": "9.8.2"
},
{
"status": "affected",
"version": "9.8.2.8"
},
{
"status": "affected",
"version": "9.8.2.14"
},
{
"status": "affected",
"version": "9.8.2.15"
},
{
"status": "affected",
"version": "9.8.2.17"
},
{
"status": "affected",
"version": "9.8.2.20"
},
{
"status": "affected",
"version": "9.8.2.24"
},
{
"status": "affected",
"version": "9.8.2.26"
},
{
"status": "affected",
"version": "9.8.2.28"
},
{
"status": "affected",
"version": "9.8.2.33"
},
{
"status": "affected",
"version": "9.8.2.35"
},
{
"status": "affected",
"version": "9.8.2.38"
},
{
"status": "affected",
"version": "9.8.3.8"
},
{
"status": "affected",
"version": "9.8.3.11"
},
{
"status": "affected",
"version": "9.8.3.14"
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{
"status": "affected",
"version": "9.8.3.16"
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{
"status": "affected",
"version": "9.8.3.18"
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{
"status": "affected",
"version": "9.8.3.21"
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{
"status": "affected",
"version": "9.8.3"
},
{
"status": "affected",
"version": "9.8.3.26"
},
{
"status": "affected",
"version": "9.8.3.29"
},
{
"status": "affected",
"version": "9.8.4"
},
{
"status": "affected",
"version": "9.8.4.3"
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{
"status": "affected",
"version": "9.8.4.7"
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
"version": "9.8.4.12"
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{
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{
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{
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{
"status": "affected",
"version": "9.8.4.25"
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{
"status": "affected",
"version": "9.8.4.20"
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{
"status": "affected",
"version": "9.8.4.22"
},
{
"status": "affected",
"version": "9.8.4.26"
},
{
"status": "affected",
"version": "9.8.4.29"
},
{
"status": "affected",
"version": "9.8.4.32"
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{
"status": "affected",
"version": "9.8.4.33"
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{
"status": "affected",
"version": "9.8.4.34"
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{
"status": "affected",
"version": "9.8.4.35"
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{
"status": "affected",
"version": "9.8.4.39"
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{
"status": "affected",
"version": "9.8.4.40"
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{
"status": "affected",
"version": "9.8.4.41"
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{
"status": "affected",
"version": "9.8.4.43"
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{
"status": "affected",
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{
"status": "affected",
"version": "9.8.4.45"
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{
"status": "affected",
"version": "9.8.4.46"
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{
"status": "affected",
"version": "9.8.4.48"
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{
"status": "affected",
"version": "9.12.1"
},
{
"status": "affected",
"version": "9.12.1.2"
},
{
"status": "affected",
"version": "9.12.1.3"
},
{
"status": "affected",
"version": "9.12.2"
},
{
"status": "affected",
"version": "9.12.2.4"
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{
"status": "affected",
"version": "9.12.2.5"
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{
"status": "affected",
"version": "9.12.2.9"
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{
"status": "affected",
"version": "9.12.3"
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{
"status": "affected",
"version": "9.12.3.2"
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{
"status": "affected",
"version": "9.12.3.7"
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{
"status": "affected",
"version": "9.12.4"
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{
"status": "affected",
"version": "9.12.3.12"
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{
"status": "affected",
"version": "9.12.3.9"
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{
"status": "affected",
"version": "9.12.2.1"
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{
"status": "affected",
"version": "9.12.4.2"
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{
"status": "affected",
"version": "9.12.4.4"
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{
"status": "affected",
"version": "9.12.4.7"
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{
"status": "affected",
"version": "9.12.4.10"
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{
"status": "affected",
"version": "9.12.4.13"
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{
"status": "affected",
"version": "9.12.4.8"
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{
"status": "affected",
"version": "9.12.4.18"
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{
"status": "affected",
"version": "9.12.4.24"
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{
"status": "affected",
"version": "9.12.4.26"
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{
"status": "affected",
"version": "9.12.4.29"
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{
"status": "affected",
"version": "9.12.4.30"
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{
"status": "affected",
"version": "9.12.4.35"
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{
"status": "affected",
"version": "9.12.4.37"
},
{
"status": "affected",
"version": "9.12.4.38"
},
{
"status": "affected",
"version": "9.12.4.39"
},
{
"status": "affected",
"version": "9.12.4.40"
},
{
"status": "affected",
"version": "9.12.4.41"
},
{
"status": "affected",
"version": "9.12.4.47"
},
{
"status": "affected",
"version": "9.12.4.48"
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{
"status": "affected",
"version": "9.12.4.50"
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{
"status": "affected",
"version": "9.12.4.52"
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{
"status": "affected",
"version": "9.12.4.54"
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{
"status": "affected",
"version": "9.12.4.55"
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{
"status": "affected",
"version": "9.12.4.56"
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{
"status": "affected",
"version": "9.12.4.58"
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{
"status": "affected",
"version": "9.12.4.62"
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{
"status": "affected",
"version": "9.12.4.65"
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{
"status": "affected",
"version": "9.12.4.67"
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{
"status": "affected",
"version": "9.14.1"
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{
"status": "affected",
"version": "9.14.1.10"
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{
"status": "affected",
"version": "9.14.1.6"
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{
"status": "affected",
"version": "9.14.1.15"
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{
"status": "affected",
"version": "9.14.1.19"
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{
"status": "affected",
"version": "9.14.1.30"
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{
"status": "affected",
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{
"status": "affected",
"version": "9.14.2.4"
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{
"status": "affected",
"version": "9.14.2.8"
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{
"status": "affected",
"version": "9.14.2.13"
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{
"status": "affected",
"version": "9.14.2.15"
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{
"status": "affected",
"version": "9.14.3"
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{
"status": "affected",
"version": "9.14.3.1"
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{
"status": "affected",
"version": "9.14.3.9"
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{
"status": "affected",
"version": "9.14.3.11"
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{
"status": "affected",
"version": "9.14.3.13"
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{
"status": "affected",
"version": "9.14.3.18"
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{
"status": "affected",
"version": "9.14.3.15"
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{
"status": "affected",
"version": "9.14.4"
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{
"status": "affected",
"version": "9.14.4.6"
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{
"status": "affected",
"version": "9.14.4.7"
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{
"status": "affected",
"version": "9.14.4.12"
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{
"status": "affected",
"version": "9.14.4.13"
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{
"status": "affected",
"version": "9.14.4.14"
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{
"status": "affected",
"version": "9.14.4.15"
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{
"status": "affected",
"version": "9.14.4.17"
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{
"status": "affected",
"version": "9.14.4.22"
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{
"status": "affected",
"version": "9.14.4.23"
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{
"status": "affected",
"version": "9.14.4.24"
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"status": "affected",
"version": "9.16.1"
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{
"status": "affected",
"version": "9.16.1.28"
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{
"status": "affected",
"version": "9.16.2"
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"status": "affected",
"version": "9.16.2.3"
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{
"status": "affected",
"version": "9.16.2.7"
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{
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"version": "9.16.2.11"
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{
"status": "affected",
"version": "9.16.2.13"
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{
"status": "affected",
"version": "9.16.2.14"
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"status": "affected",
"version": "9.16.3"
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{
"status": "affected",
"version": "9.16.3.3"
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{
"status": "affected",
"version": "9.16.3.14"
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{
"status": "affected",
"version": "9.16.3.15"
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{
"status": "affected",
"version": "9.16.3.19"
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{
"status": "affected",
"version": "9.16.3.23"
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{
"status": "affected",
"version": "9.16.4"
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{
"status": "affected",
"version": "9.16.4.9"
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{
"status": "affected",
"version": "9.16.4.14"
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{
"status": "affected",
"version": "9.16.4.18"
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{
"status": "affected",
"version": "9.16.4.19"
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{
"status": "affected",
"version": "9.16.4.27"
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{
"status": "affected",
"version": "9.16.4.38"
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{
"status": "affected",
"version": "9.16.4.39"
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{
"status": "affected",
"version": "9.16.4.42"
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{
"status": "affected",
"version": "9.16.4.48"
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{
"status": "affected",
"version": "9.16.4.55"
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{
"status": "affected",
"version": "9.16.4.57"
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{
"status": "affected",
"version": "9.16.4.61"
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{
"status": "affected",
"version": "9.16.4.62"
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{
"status": "affected",
"version": "9.16.4.67"
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{
"status": "affected",
"version": "9.16.4.70"
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{
"status": "affected",
"version": "9.16.4.71"
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{
"status": "affected",
"version": "9.16.4.76"
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{
"status": "affected",
"version": "9.16.4.82"
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{
"status": "affected",
"version": "9.16.4.84"
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{
"status": "affected",
"version": "9.17.1"
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{
"status": "affected",
"version": "9.17.1.7"
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{
"status": "affected",
"version": "9.17.1.9"
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{
"status": "affected",
"version": "9.17.1.10"
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{
"status": "affected",
"version": "9.17.1.11"
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{
"status": "affected",
"version": "9.17.1.13"
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{
"status": "affected",
"version": "9.17.1.15"
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{
"status": "affected",
"version": "9.17.1.20"
},
{
"status": "affected",
"version": "9.17.1.30"
},
{
"status": "affected",
"version": "9.17.1.33"
},
{
"status": "affected",
"version": "9.17.1.39"
},
{
"status": "affected",
"version": "9.17.1.45"
},
{
"status": "affected",
"version": "9.17.1.46"
},
{
"status": "affected",
"version": "9.18.1"
},
{
"status": "affected",
"version": "9.18.1.3"
},
{
"status": "affected",
"version": "9.18.2"
},
{
"status": "affected",
"version": "9.18.2.5"
},
{
"status": "affected",
"version": "9.18.2.7"
},
{
"status": "affected",
"version": "9.18.2.8"
},
{
"status": "affected",
"version": "9.18.3"
},
{
"status": "affected",
"version": "9.18.3.39"
},
{
"status": "affected",
"version": "9.18.3.46"
},
{
"status": "affected",
"version": "9.18.3.53"
},
{
"status": "affected",
"version": "9.18.3.55"
},
{
"status": "affected",
"version": "9.18.3.56"
},
{
"status": "affected",
"version": "9.18.4"
},
{
"status": "affected",
"version": "9.18.4.5"
},
{
"status": "affected",
"version": "9.18.4.8"
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{
"status": "affected",
"version": "9.18.4.22"
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{
"status": "affected",
"version": "9.18.4.24"
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{
"status": "affected",
"version": "9.18.4.29"
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{
"status": "affected",
"version": "9.18.4.34"
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{
"status": "affected",
"version": "9.18.4.40"
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{
"status": "affected",
"version": "9.18.4.47"
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{
"status": "affected",
"version": "9.18.4.50"
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{
"status": "affected",
"version": "9.18.4.52"
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{
"status": "affected",
"version": "9.18.4.53"
},
{
"status": "affected",
"version": "9.18.4.57"
},
{
"status": "affected",
"version": "9.18.4.66"
},
{
"status": "affected",
"version": "9.19.1"
},
{
"status": "affected",
"version": "9.19.1.5"
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{
"status": "affected",
"version": "9.19.1.9"
},
{
"status": "affected",
"version": "9.19.1.12"
},
{
"status": "affected",
"version": "9.19.1.18"
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{
"status": "affected",
"version": "9.19.1.22"
},
{
"status": "affected",
"version": "9.19.1.24"
},
{
"status": "affected",
"version": "9.19.1.27"
},
{
"status": "affected",
"version": "9.19.1.28"
},
{
"status": "affected",
"version": "9.19.1.31"
},
{
"status": "affected",
"version": "9.19.1.37"
},
{
"status": "affected",
"version": "9.19.1.38"
},
{
"status": "affected",
"version": "9.19.1.42"
},
{
"status": "affected",
"version": "9.20.1"
},
{
"status": "affected",
"version": "9.20.1.5"
},
{
"status": "affected",
"version": "9.20.2"
},
{
"status": "affected",
"version": "9.20.2.10"
},
{
"status": "affected",
"version": "9.20.2.21"
},
{
"status": "affected",
"version": "9.20.2.22"
},
{
"status": "affected",
"version": "9.20.3"
},
{
"status": "affected",
"version": "9.20.3.4"
},
{
"status": "affected",
"version": "9.20.3.7"
},
{
"status": "affected",
"version": "9.20.3.9"
},
{
"status": "affected",
"version": "9.20.3.10"
},
{
"status": "affected",
"version": "9.20.3.13"
},
{
"status": "affected",
"version": "9.20.3.16"
},
{
"status": "affected",
"version": "9.20.3.20"
},
{
"status": "affected",
"version": "9.20.4"
},
{
"status": "affected",
"version": "9.20.4.7"
},
{
"status": "affected",
"version": "9.22.1.1"
},
{
"status": "affected",
"version": "9.22.1.3"
},
{
"status": "affected",
"version": "9.22.1.2"
},
{
"status": "affected",
"version": "9.22.1.6"
},
{
"status": "affected",
"version": "9.22.2"
},
{
"status": "affected",
"version": "9.22.2.4"
},
{
"status": "affected",
"version": "9.22.2.9"
},
{
"status": "affected",
"version": "9.22.2.13"
},
{
"status": "affected",
"version": "9.23.1"
},
{
"status": "affected",
"version": "9.23.1.3"
},
{
"status": "affected",
"version": "9.23.1.7"
},
{
"status": "affected",
"version": "9.23.1.13"
}
]
},
{
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "6.2.3"
},
{
"status": "affected",
"version": "6.2.3.1"
},
{
"status": "affected",
"version": "6.2.3.2"
},
{
"status": "affected",
"version": "6.2.3.3"
},
{
"status": "affected",
"version": "6.2.3.4"
},
{
"status": "affected",
"version": "6.2.3.5"
},
{
"status": "affected",
"version": "6.2.3.6"
},
{
"status": "affected",
"version": "6.2.3.7"
},
{
"status": "affected",
"version": "6.2.3.8"
},
{
"status": "affected",
"version": "6.2.3.10"
},
{
"status": "affected",
"version": "6.2.3.11"
},
{
"status": "affected",
"version": "6.2.3.9"
},
{
"status": "affected",
"version": "6.2.3.12"
},
{
"status": "affected",
"version": "6.2.3.13"
},
{
"status": "affected",
"version": "6.2.3.14"
},
{
"status": "affected",
"version": "6.2.3.15"
},
{
"status": "affected",
"version": "6.2.3.16"
},
{
"status": "affected",
"version": "6.2.3.17"
},
{
"status": "affected",
"version": "6.2.3.18"
},
{
"status": "affected",
"version": "6.6.0"
},
{
"status": "affected",
"version": "6.6.0.1"
},
{
"status": "affected",
"version": "6.6.1"
},
{
"status": "affected",
"version": "6.6.3"
},
{
"status": "affected",
"version": "6.6.4"
},
{
"status": "affected",
"version": "6.6.5"
},
{
"status": "affected",
"version": "6.6.5.1"
},
{
"status": "affected",
"version": "6.6.5.2"
},
{
"status": "affected",
"version": "6.6.7"
},
{
"status": "affected",
"version": "6.6.7.1"
},
{
"status": "affected",
"version": "6.6.7.2"
},
{
"status": "affected",
"version": "6.4.0"
},
{
"status": "affected",
"version": "6.4.0.1"
},
{
"status": "affected",
"version": "6.4.0.3"
},
{
"status": "affected",
"version": "6.4.0.2"
},
{
"status": "affected",
"version": "6.4.0.4"
},
{
"status": "affected",
"version": "6.4.0.5"
},
{
"status": "affected",
"version": "6.4.0.6"
},
{
"status": "affected",
"version": "6.4.0.7"
},
{
"status": "affected",
"version": "6.4.0.8"
},
{
"status": "affected",
"version": "6.4.0.9"
},
{
"status": "affected",
"version": "6.4.0.10"
},
{
"status": "affected",
"version": "6.4.0.11"
},
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{
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{
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{
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},
{
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{
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{
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{
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{
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{
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},
{
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},
{
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},
{
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},
{
"status": "affected",
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{
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{
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{
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{
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},
{
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},
{
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{
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{
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},
{
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},
{
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{
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},
{
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{
"status": "affected",
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},
{
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{
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{
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{
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{
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
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{
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{
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{
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"status": "affected",
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]
}
],
"source": "psirt@cisco.com"
}
],
"cisaActionDue": "2025-09-26",
"cisaExploitAdd": "2025-09-25",
"cisaRequiredAction": "The KEV due date refers to the deadline by which FCEB agencies are expected to review and begin implementing the guidance outlined in Emergency Directive (ED) 25-03 (URL listed below in Notes). Agencies must follow the mitigation steps provided by CISA (URL listed below in Notes) and vendor\u2019s instructions (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.",
"cisaVulnerabilityName": "Cisco Secure Firewall Adaptive Security (ASA) Appliance and Secure Firewall Threat Defense (FTD) Missing Authorization Vulnerability",
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Update: On November 5, 2025, Cisco became aware of a new attack variant against devices running Cisco Secure ASA Software or Cisco Secure FTD Software releases that are affected by CVE-2025-20333 and CVE-2025-20362. This attack can cause unpatched devices to unexpectedly reload, leading to denial of service (DoS) conditions. Cisco strongly recommends that all customers upgrade to the fixed software releases that are listed in the Fixed Software [\"#fs\"] section of this advisory.\r\n\r A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to access restricted URL endpoints that are related to remote access VPN that should otherwise be inaccessible without authentication.\r\n\r This vulnerability is due to improper validation of user-supplied input in HTTP(S) requests. An attacker could exploit this vulnerability by sending crafted HTTP requests to a targeted web server on a device. A successful exploit could allow the attacker to access a restricted URL without authentication."
},
{
"lang": "es",
"value": "Actualizaci\u00f3n: El 5 de noviembre de 2025, Cisco tuvo conocimiento de una nueva variante de ataque contra dispositivos que ejecutan versiones de Cisco Secure ASA Software o Cisco Secure FTD Software que est\u00e1n afectadas por CVE-2025-20333 y CVE-2025-20362. Este ataque puede causar que los dispositivos sin parchear se recarguen inesperadamente, lo que lleva a condiciones de denegaci\u00f3n de servicio (DoS). Cisco recomienda encarecidamente que todos los clientes actualicen a las versiones de software corregidas que se enumeran en la secci\u00f3n Fixed Software [\u201c#fs\u201d] de este aviso.\n Una vulnerabilidad en el servidor web VPN de Cisco Secure Firewall Adaptive Security Appliance (ASA) Software y Cisco Secure Firewall Threat Defense (FTD) Software podr\u00eda permitir a un atacante remoto no autenticado acceder a puntos finales de URL restringidos que est\u00e1n relacionados con la VPN de acceso remoto y que de otro modo deber\u00edan ser inaccesibles sin autenticaci\u00f3n.\n Esta vulnerabilidad se debe a una validaci\u00f3n incorrecta de la entrada proporcionada por el usuario en las solicitudes HTTP(S). Un atacante podr\u00eda explotar esta vulnerabilidad enviando solicitudes HTTP manipuladas a un servidor web objetivo en un dispositivo. Un exploit exitoso podr\u00eda permitir al atacante acceder a una URL restringida sin autenticaci\u00f3n."
}
],
"id": "CVE-2025-20362",
"lastModified": "2026-10-18T21:10:00.120",
"metrics": {
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{
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"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
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},
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"source": "psirt@cisco.com",
"type": "Secondary"
},
{
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},
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],
"role": "CISA Coordinator",
"timestamp": "2025-09-26T03:55:16.318925Z",
"version": "2.0.3"
}
}
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},
"published": "2025-09-25T16:15:32.280",
"references": [
{
"source": "psirt@cisco.com",
"tags": [
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],
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-webvpn-YROOTUW"
},
{
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},
{
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"tags": [
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],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-20362"
}
],
"sourceIdentifier": "psirt@cisco.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-862"
}
],
"source": "psirt@cisco.com",
"type": "Secondary"
}
]
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.