CVE-2025-20362
Confirmed PUBLISHEDUpdate: On November 5, 2025, Cisco became aware of a new attack variant against devices running Cisco Secure ASA Software or Cisco Secure FTD...
1 day faster than CISA KEV
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
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.
- CVE Published
- Sep 25, 2025
- Exploitation Reported
- Jun 01, 2026
- CVSS
- 6.5 Medium
- EPSS
- 85.5%
Affected Versions
335 version rows · page 1 of 14
| Vendor | Product | Version | Status |
|---|---|---|---|
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.1 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.1.5 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.1.7 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.2 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.2.8 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.2.14 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.2.15 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.2.17 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.2.20 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.2.24 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.2.26 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.2.28 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.2.33 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.2.35 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.2.38 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.3.8 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.3.11 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.3.14 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.3.16 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.3.18 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.3.21 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.3 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.3.26 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.3.29 |
Affected |
| Cisco |
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
|
9.8.4 |
Affected |
CVE References
- cisco-sa-asaftd-webvpn-YROOTUW sec.cloudapps.cisco.com · CVE Record https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurity...
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CVE First | 2026-06-01 10:41 UTC |
| CISA | 2026-06-02 14:06 UTC |
| The Shadowserver | 2026-06-27 10:15 UTC |
Scanner Artifacts
Nuclei and Metasploit references linked to this CVE.
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-20362.yaml | Jun 01, 2026 |
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Exploitation Status
Exploited in the wild
Recorded 2026-06-01 10:41:10 UTC · CVE
Proof of concept available
Recorded 2026-06-12 14:21:05 UTC · Nuclei Templates
Weaknesses (CWE)
-
Missing Authorization
Scanner Integrations
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-20362.yaml | Jun 01, 2026 |
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
nuclei · Created Unknown
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
10:15 UTC 22 days ago10:15 UTC · 22 days ago
KEV confirmed by The Shadowserver
Exploitation attested by an external source
-
14:21 UTC about 1 month ago14:21 UTC · about 1 month ago
Public PoC available
Public proof-of-concept code published
-
14:06 UTC about 2 months ago14:06 UTC · about 2 months ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
15:34 UTC about 2 months ago15:34 UTC · about 2 months ago
Nuclei template available
Scanner coverage available
-
10:41 UTC about 2 months ago10:41 UTC · about 2 months ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
16:12 UTC 10 months ago16:12 UTC · 10 months ago
CVE published
Vulnerability disclosed publicly
-
19:15 UTC almost 2 years ago19:15 UTC · almost 2 years ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2025-20362
{
"cve_id": "CVE-2025-20362",
"title": "Update: On November 5, 2025, Cisco became aware of a new attack variant again...",
"affected_vendor": "Cisco",
"affected_product": "Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Cisco Secure Firewall Threat Defense (FTD) Software",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 6.5,
"epss_score": 0.85543,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}