CVE-2026-20073

MEDIUM EPSS 30.0%
Published Mar 4, 20263mo ago · Modified May 4, 20261mo ago
5.8 CVSS 3.1
Medium
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Published Mar 4, 2026 3mo ago
Last Modified May 4, 2026 1mo ago

Description

A vulnerability in Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to send traffic that should be denied through an affected device. This vulnerability is due to improper error handling when an affected device that is joining a cluster runs out of memory while replicating access control rules. An attacker could exploit this vulnerability by sending traffic that should be blocked through the device. A successful exploit could allow the attacker to bypass access controls and reach devices in protected networks.

CVSS Details

Base Score
5.8
Exploitability
3.9
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Changed
Confidentiality None
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
30.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-284

Affected Products 232

VendorProductVersionRange
ciscoadaptive_security_appliance_software9.12.1any
ciscoadaptive_security_appliance_software9.12.1.2any
ciscoadaptive_security_appliance_software9.12.1.3any
ciscoadaptive_security_appliance_software9.12.2any
ciscoadaptive_security_appliance_software9.12.2.1any
ciscoadaptive_security_appliance_software9.12.2.4any
ciscoadaptive_security_appliance_software9.12.2.5any
ciscoadaptive_security_appliance_software9.12.2.9any
ciscoadaptive_security_appliance_software9.12.3any
ciscoadaptive_security_appliance_software9.12.3.2any
ciscoadaptive_security_appliance_software9.12.3.7any
ciscoadaptive_security_appliance_software9.12.3.9any
ciscoadaptive_security_appliance_software9.12.3.12any
ciscoadaptive_security_appliance_software9.12.4any
ciscoadaptive_security_appliance_software9.12.4.2any
ciscoadaptive_security_appliance_software9.12.4.4any
ciscoadaptive_security_appliance_software9.12.4.7any
ciscoadaptive_security_appliance_software9.12.4.8any
ciscoadaptive_security_appliance_software9.12.4.10any
ciscoadaptive_security_appliance_software9.12.4.13any
ciscoadaptive_security_appliance_software9.12.4.18any
ciscoadaptive_security_appliance_software9.12.4.24any
ciscoadaptive_security_appliance_software9.12.4.26any
ciscoadaptive_security_appliance_software9.12.4.29any
ciscoadaptive_security_appliance_software9.12.4.30any
ciscoadaptive_security_appliance_software9.12.4.35any
ciscoadaptive_security_appliance_software9.12.4.37any
ciscoadaptive_security_appliance_software9.12.4.38any
ciscoadaptive_security_appliance_software9.12.4.39any
ciscoadaptive_security_appliance_software9.12.4.40any
ciscoadaptive_security_appliance_software9.12.4.41any
ciscoadaptive_security_appliance_software9.12.4.47any
ciscoadaptive_security_appliance_software9.12.4.48any
ciscoadaptive_security_appliance_software9.12.4.50any
ciscoadaptive_security_appliance_software9.12.4.52any
ciscoadaptive_security_appliance_software9.12.4.54any
ciscoadaptive_security_appliance_software9.12.4.55any
ciscoadaptive_security_appliance_software9.12.4.56any
ciscoadaptive_security_appliance_software9.12.4.58any
ciscoadaptive_security_appliance_software9.12.4.62any
ciscoadaptive_security_appliance_software9.12.4.65any
ciscoadaptive_security_appliance_software9.12.4.67any
ciscoadaptive_security_appliance_software9.16.1any
ciscoadaptive_security_appliance_software9.16.1.28any
ciscoadaptive_security_appliance_software9.16.2any
ciscoadaptive_security_appliance_software9.16.2.3any
ciscoadaptive_security_appliance_software9.16.2.7any
ciscoadaptive_security_appliance_software9.16.2.11any
ciscoadaptive_security_appliance_software9.16.2.13any
ciscoadaptive_security_appliance_software9.16.2.14any
ciscoadaptive_security_appliance_software9.16.3any
ciscoadaptive_security_appliance_software9.16.3.3any
ciscoadaptive_security_appliance_software9.16.3.14any
ciscoadaptive_security_appliance_software9.16.3.15any
ciscoadaptive_security_appliance_software9.16.3.19any
ciscoadaptive_security_appliance_software9.16.3.23any
ciscoadaptive_security_appliance_software9.16.4any
ciscoadaptive_security_appliance_software9.16.4.9any
ciscoadaptive_security_appliance_software9.16.4.14any
ciscoadaptive_security_appliance_software9.16.4.19any
ciscoadaptive_security_appliance_software9.16.4.27any
ciscoadaptive_security_appliance_software9.16.4.38any
ciscoadaptive_security_appliance_software9.16.4.39any
ciscoadaptive_security_appliance_software9.16.4.42any
ciscoadaptive_security_appliance_software9.16.4.48any
ciscoadaptive_security_appliance_software9.16.4.55any
ciscoadaptive_security_appliance_software9.16.4.57any
ciscoadaptive_security_appliance_software9.16.4.61any
ciscoadaptive_security_appliance_software9.16.4.62any
ciscoadaptive_security_appliance_software9.16.4.67any
ciscoadaptive_security_appliance_software9.16.4.70any
ciscoadaptive_security_appliance_software9.16.4.71any
ciscoadaptive_security_appliance_software9.16.4.76any
ciscoadaptive_security_appliance_software9.16.4.82any
ciscoadaptive_security_appliance_software9.16.4.84any
ciscoadaptive_security_appliance_software9.17.1any
ciscoadaptive_security_appliance_software9.17.1.7any
ciscoadaptive_security_appliance_software9.17.1.9any
ciscoadaptive_security_appliance_software9.17.1.10any
ciscoadaptive_security_appliance_software9.17.1.11any
ciscoadaptive_security_appliance_software9.17.1.13any
ciscoadaptive_security_appliance_software9.17.1.15any
ciscoadaptive_security_appliance_software9.17.1.20any
ciscoadaptive_security_appliance_software9.17.1.30any
ciscoadaptive_security_appliance_software9.17.1.33any
ciscoadaptive_security_appliance_software9.17.1.39any
ciscoadaptive_security_appliance_software9.17.1.45any
ciscoadaptive_security_appliance_software9.17.1.46any
ciscoadaptive_security_appliance_software9.18.1any
ciscoadaptive_security_appliance_software9.18.1.3any
ciscoadaptive_security_appliance_software9.18.2any
ciscoadaptive_security_appliance_software9.18.2.5any
ciscoadaptive_security_appliance_software9.18.2.7any
ciscoadaptive_security_appliance_software9.18.2.8any
ciscoadaptive_security_appliance_software9.18.3any
ciscoadaptive_security_appliance_software9.18.3.39any
ciscoadaptive_security_appliance_software9.18.3.46any
ciscoadaptive_security_appliance_software9.18.3.53any
ciscoadaptive_security_appliance_software9.18.3.55any
ciscoadaptive_security_appliance_software9.18.3.56any
ciscoadaptive_security_appliance_software9.18.4any
ciscoadaptive_security_appliance_software9.18.4.5any
ciscoadaptive_security_appliance_software9.18.4.8any
ciscoadaptive_security_appliance_software9.18.4.22any
ciscoadaptive_security_appliance_software9.18.4.24any
ciscoadaptive_security_appliance_software9.18.4.29any
ciscoadaptive_security_appliance_software9.18.4.34any
ciscoadaptive_security_appliance_software9.18.4.40any
ciscoadaptive_security_appliance_software9.18.4.47any
ciscoadaptive_security_appliance_software9.18.4.50any
ciscoadaptive_security_appliance_software9.18.4.52any
ciscoadaptive_security_appliance_software9.18.4.53any
ciscoadaptive_security_appliance_software9.18.4.57any
ciscoadaptive_security_appliance_software9.18.4.66any
ciscoadaptive_security_appliance_software9.18.4.67any
ciscoadaptive_security_appliance_software9.19.1any
ciscoadaptive_security_appliance_software9.19.1.5any
ciscoadaptive_security_appliance_software9.19.1.9any
ciscoadaptive_security_appliance_software9.19.1.12any
ciscoadaptive_security_appliance_software9.19.1.18any
ciscoadaptive_security_appliance_software9.19.1.22any
ciscoadaptive_security_appliance_software9.19.1.24any
ciscoadaptive_security_appliance_software9.19.1.27any
ciscoadaptive_security_appliance_software9.19.1.28any
ciscoadaptive_security_appliance_software9.19.1.31any
ciscoadaptive_security_appliance_software9.19.1.37any
ciscoadaptive_security_appliance_software9.19.1.38any
ciscoadaptive_security_appliance_software9.19.1.42any
ciscoadaptive_security_appliance_software9.20.1any
ciscoadaptive_security_appliance_software9.20.1.5any
ciscoadaptive_security_appliance_software9.20.2any
ciscoadaptive_security_appliance_software9.20.2.10any
ciscoadaptive_security_appliance_software9.20.2.21any
ciscoadaptive_security_appliance_software9.20.2.22any
ciscoadaptive_security_appliance_software9.20.3any
ciscoadaptive_security_appliance_software9.20.3.4any
ciscoadaptive_security_appliance_software9.20.3.7any
ciscoadaptive_security_appliance_software9.20.3.9any
ciscoadaptive_security_appliance_software9.20.3.10any
ciscoadaptive_security_appliance_software9.20.3.13any
ciscoadaptive_security_appliance_software9.20.3.16any
ciscoadaptive_security_appliance_software9.20.3.20any
ciscoadaptive_security_appliance_software9.20.4any
ciscoadaptive_security_appliance_software9.20.4.7any
ciscoadaptive_security_appliance_software9.20.4.10any
ciscoadaptive_security_appliance_software9.22.1.1any
ciscoadaptive_security_appliance_software9.22.1.2any
ciscoadaptive_security_appliance_software9.22.1.3any
ciscoadaptive_security_appliance_software9.22.1.6any
ciscoadaptive_security_appliance_software9.22.2any
ciscoadaptive_security_appliance_software9.22.2.4any
ciscoadaptive_security_appliance_software9.22.2.9any
ciscoadaptive_security_appliance_software9.22.2.13any
ciscoadaptive_security_appliance_software9.23.1any
ciscoadaptive_security_appliance_software9.23.1.3any
ciscoadaptive_security_appliance_software9.23.1.7any
ciscoadaptive_security_appliance_software9.23.1.13any
ciscoadaptive_security_appliance_software9.23.1.19any
ciscofirepower_threat_defense6.4.0any
ciscofirepower_threat_defense6.4.0.1any
ciscofirepower_threat_defense6.4.0.2any
ciscofirepower_threat_defense6.4.0.3any
ciscofirepower_threat_defense6.4.0.4any
ciscofirepower_threat_defense6.4.0.5any
ciscofirepower_threat_defense6.4.0.6any
ciscofirepower_threat_defense6.4.0.7any
ciscofirepower_threat_defense6.4.0.8any
ciscofirepower_threat_defense6.4.0.9any
ciscofirepower_threat_defense6.4.0.10any
ciscofirepower_threat_defense6.4.0.11any
ciscofirepower_threat_defense6.4.0.12any
ciscofirepower_threat_defense6.4.0.13any
ciscofirepower_threat_defense6.4.0.14any
ciscofirepower_threat_defense6.4.0.15any
ciscofirepower_threat_defense6.4.0.16any
ciscofirepower_threat_defense6.4.0.17any
ciscofirepower_threat_defense6.4.0.18any
ciscofirepower_threat_defense7.0.0any
ciscofirepower_threat_defense7.0.0.1any
ciscofirepower_threat_defense7.0.1any
ciscofirepower_threat_defense7.0.1.1any
ciscofirepower_threat_defense7.0.2any
ciscofirepower_threat_defense7.0.2.1any
ciscofirepower_threat_defense7.0.3any
ciscofirepower_threat_defense7.0.4any
ciscofirepower_threat_defense7.0.5any
ciscofirepower_threat_defense7.0.6any
ciscofirepower_threat_defense7.0.6.1any
ciscofirepower_threat_defense7.0.6.2any
ciscofirepower_threat_defense7.0.6.3any
ciscofirepower_threat_defense7.0.7any
ciscofirepower_threat_defense7.0.8any
ciscofirepower_threat_defense7.0.8.1any
ciscofirepower_threat_defense7.1.0any
ciscofirepower_threat_defense7.1.0.1any
ciscofirepower_threat_defense7.1.0.2any
ciscofirepower_threat_defense7.1.0.3any
ciscofirepower_threat_defense7.2.0any
ciscofirepower_threat_defense7.2.0.1any
ciscofirepower_threat_defense7.2.1any
ciscofirepower_threat_defense7.2.2any
ciscofirepower_threat_defense7.2.3any
ciscofirepower_threat_defense7.2.4any
ciscofirepower_threat_defense7.2.4.1any
ciscofirepower_threat_defense7.2.5any
ciscofirepower_threat_defense7.2.5.1any
ciscofirepower_threat_defense7.2.5.2any
ciscofirepower_threat_defense7.2.6any
ciscofirepower_threat_defense7.2.7any
ciscofirepower_threat_defense7.2.8any
ciscofirepower_threat_defense7.2.8.1any
ciscofirepower_threat_defense7.2.9any
ciscofirepower_threat_defense7.2.10any
ciscofirepower_threat_defense7.3.0any
ciscofirepower_threat_defense7.3.1any
ciscofirepower_threat_defense7.3.1.1any
ciscofirepower_threat_defense7.3.1.2any
ciscofirepower_threat_defense7.4.0any
ciscofirepower_threat_defense7.4.1any
ciscofirepower_threat_defense7.4.1.1any
ciscofirepower_threat_defense7.4.2any
ciscofirepower_threat_defense7.4.2.1any
ciscofirepower_threat_defense7.4.2.2any
ciscofirepower_threat_defense7.4.2.3any
ciscofirepower_threat_defense7.4.2.4any
ciscofirepower_threat_defense7.6.0any
ciscofirepower_threat_defense7.6.1any
ciscofirepower_threat_defense7.6.2any
ciscofirepower_threat_defense7.6.2.1any
ciscofirepower_threat_defense7.7.0any
ciscofirepower_threat_defense7.7.10any
ciscofirepower_threat_defense7.7.10.1any

References 1

  • sec.cloudapps.cisco.com https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-aclbypass-dos-CVxVRSvQ
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.