CVE-2026-20333

HIGH

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software, Cisco Secure Firewall Threat Defense Software and Cisco Secur...

Affects 0 products across 1 vendor.

CVSS 3.18.8
EPSS0.3%
Percentile22th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, low privileges required, no user interaction needed, impact contained to the vulnerable component, full confidentiality impact, full integrity impact, full availability impact.
CWE Weakness Definitions
CWE-697: CWE-697
Related Attack Patterns (CAPEC)
CAPEC-3 Using Leading 'Ghost' Character Sequences to Bypass Input Filters
via CWE-697
CAPEC-7 Blind SQL Injection
via CWE-697
CAPEC-8 Buffer Overflow in an API Call
via CWE-697
CAPEC-9 Buffer Overflow in Local Command-Line Utilities
via CWE-697
CAPEC-10 Buffer Overflow via Environment Variables
via CWE-697
Show all 29

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ AI Analysis — automated analysis, not human-reviewed

A high severity vulnerability (CVE-2026-20333) affects the target system. As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software, Cisco Secure Firewall Threat Defense Software and Cisco Secure Firewall Management Center Software engineering tea...

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Frequently Asked Questions
What is CVE-2026-20333?
A high severity vulnerability (CVE-2026-20333) affects the target system. As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software, Cisco Secure Firewall Threat Defense Software and Cisco Secure Firewall Management Center Software engineering tea...
What is the CVSS score for CVE-2026-20333?
CVE-2026-20333 has CVSS 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS: 0.3%.
Is CVE-2026-20333 actively exploited?
No confirmed active exploitation of CVE-2026-20333 as of 2026-10-06.
How do I remediate CVE-2026-20333?
Apply vendor patches for CVE-2026-20333. Monitor Cisco advisories.
What systems are affected by CVE-2026-20333?
CVE-2026-20333 affects: Cisco.
Vulnerability Details
CVE IDCVE-2026-20333
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published2026-09-16
Last Modified2026-09-18
ICS Relevance65%
Weakness (CWE)
CWE-697
SourceNVD
Official Description

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software, Cisco Secure Firewall Threat Defense Software and Cisco Secure Firewall Management Center Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20333 are related to incorrect comparison conditions that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-697.

Source: NIST NVD / MITRE CVE Database

Affected Products
VendorProductAffected Versions
Cisco — —
Remediation

No patch URL on record. Monitor vendor security advisories directly.

Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 19 Days
CISA known-exploitedNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
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