Threat Intelligence / CVE / CVE-2025-20362

CVE-2025-20362 — Cisco Adaptive Security Appliance Software

CVSS v3.1 8.6 (HIGH) · EPSS 50.6% (higher than 97.8% of all scored CVEs) · Priority 8.2/10 · Published 2025-09-25

As of 2025-11-06, CVE-2025-20362 is a HIGH-severity vulnerability in Cisco Adaptive Security Appliance Software, CVSS v3.1 8.6, EPSS 50.6% (97.8th percentile). Threadlinqs Intelligence links 2 tracked threat campaigns to CVE-2025-20362, most recently “AhnLab ASEC April 2026 APT Group Trend Report: State-Sponsored Espionage Campaigns (CVE-2026-32202, CVE-2025-20333/20362, CVE-2021-26855)”.

Last updated: 2025-11-06

What is CVE-2025-20362?

A vulnerability in the VPN web server of Cisco Secure Firewall ASA and FTD Software allows an unauthenticated, remote attacker to access restricted URL endpoints through improper HTTP input validation.

The record classifies CVE-2025-20362 under weakness class CWE-862. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on availability. 2 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 353 days ago.

Severity and exploitation probability

CVSS v3.1 base score: 8.6 — HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
EPSS (FIRST): 50.6% probability of exploitation in the next 30 days, higher than 97.8% of all scored CVEs
CISA KEV: Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority: 8.2/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published: 2025-09-25, last modified 2025-11-06

Is CVE-2025-20362 being exploited?

It currently carries a trending score of 29 in the Threadlinqs vulnerability feed.

Affected products and versions

Cisco: Adaptive Security Appliance Software, Firepower Threat Defense

How to fix CVE-2025-20362

The record marks a vendor fix as available for CVE-2025-20362. Vendor advisory: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-webvpn-YROOTUW. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

Threat activity tracking CVE-2025-20362

2 tracked threats in the Threadlinqs corpus reference CVE-2025-20362, either in the campaign’s CVE list or as an indicator on the campaign record.

AhnLab ASEC April 2026 APT Group Trend Report: State-Sponsored Espionage Campaigns (CVE-2026-32202, CVE-2025-20333/20362, CVE-2021-26855) — HIGH · 2026-06-10
Firestarter Malware Persists on Cisco ASA/Firepower Through Firmware Updates (CVE-2025-20333, CVE-2025-20362) — UAT-4356/ArcaneDoor — CRITICAL · 2026-04-24

Sources

Seeded from nvd and not yet processed by the Threadlinqs enrichment pipeline, so blank CVSS, EPSS or KEV fields above mean NOT MEASURED rather than measured-absent.

Full detection coverage & IOCs for threats exploiting CVE-2025-20362 are available via the Threadlinqs MCP server (Purple tier). View plans →

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