Search/CVE-2026-20332
● CVE — Critical

CVE-2026-20332

DiscoveredSep 16, 2026UpdatedSep 18, 2026

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-2026-20332 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-284.

CVSS v3.1
9.9 CRITICAL
EPSS
0.40%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
3
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Sep 19, 2026 → Oct 26, 2026
▲ 0.10pp
0.30% → 0.40% over 2 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
ScopeCHANGED
ConfidentialityHIGH
IntegrityHIGH
AvailabilityHIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Connections
7 relationships
Timeline
disclosure → media coverage
Sep 16, 2026
Disclosure — published as a CVE record.
Sep 17, 2026
thehackernews.com reports: Cisco Warns of New Zero-Day ISE Auth Bypass (CVSS 10.0) Exploited in Active Attacks
Sep 17, 2026
securityweek.com reports: Cisco Fixes Dozens of Flaws Across FMC, ISE and Nexus Dashboard
Oct 28, 2026
advisories.ncsc.nl reports: NCSC-2026-0458 [1.00] [M/H] Kwetsbaarheden verholpen in Cisco Secure Firewall ASA, Threat Defense en Management Center