October 13, 2026

CVE Watchtower

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CVE-2025-20333NVD

Vulnerability Summary

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 authenticated, remote attacker to execute arbitrary code on an affected device.

This vulnerability is due to improper validation of user-supplied input in HTTP(S) requests. An attacker with valid VPN user credentials could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code as root, possibly resulting in the complete compromise of the affected device.
Severity Level
CRITICAL(9.9)
Published Date
Sep 25, 2025
Last Modified
Aug 11, 2026
Exploitation Status
ACTIVE
EPSS Score (30-Day)
70.65%Probability
Root Weakness (CWE)
CWE-120: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v3.1 Base Metrics — Score 9.9 (CRITICAL)
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Cisco Adaptive Security Appliance Software >= 9.12 and < 9.12.4.72
  • Cisco Adaptive Security Appliance Software >= 9.14 and < 9.14.4.28
  • Cisco Adaptive Security Appliance Software >= 9.16 and < 9.16.4.85
  • Cisco Adaptive Security Appliance Software >= 9.17.0 and < 9.17.1.45
  • Cisco Adaptive Security Appliance Software >= 9.18 and < 9.18.4.47
  • Cisco Adaptive Security Appliance Software >= 9.19 and < 9.19.1.37
  • Cisco Adaptive Security Appliance Software >= 9.20 and < 9.20.3.7
  • Cisco Adaptive Security Appliance Software >= 9.22 and < 9.22.1.3
  • Cisco Secure Firewall Threat Defense >= 7.0.0 and < 7.0.8.1
  • Cisco Secure Firewall Threat Defense >= 7.1.0 and < 7.2.9
  • Cisco Secure Firewall Threat Defense >= 7.3.0 and < 7.4.2.4
  • Cisco Secure Firewall Threat Defense
Patched Versions
  • Cisco Adaptive Security Appliance Software 9.12.4.72
  • Cisco Adaptive Security Appliance Software 9.14.4.28
  • Cisco Adaptive Security Appliance Software 9.16.4.85
  • Cisco Adaptive Security Appliance Software 9.17.1.45
  • Cisco Adaptive Security Appliance Software 9.18.4.47
  • Cisco Adaptive Security Appliance Software 9.19.1.37
  • Cisco Adaptive Security Appliance Software 9.20.3.7
  • Cisco Adaptive Security Appliance Software 9.22.1.3
  • Cisco Secure Firewall Threat Defense 7.0.8.1
  • Cisco Secure Firewall Threat Defense 7.2.9
  • Cisco Secure Firewall Threat Defense 7.4.2.4
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💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.
🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.

External References