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The vulnerability of the speed-limiting mechanism in syslog 419002 of Cisco Secure Firewall Threat Defense (FTD) and Cisco Secure Firewall Adaptive Security Appliance (ASA) allows a attacker to trigger a service failure.

🗓️ 23 Sep 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec
 bdu_fstec🔗 bdu.fstec.ru👁 4 Views

Improper memory release in syslog 419002 of Cisco FTD and ASA allows service failure.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
circl
Circl		CVE-2026-20154
17 Sep 202604:45
–circl
cisco
Cisco		Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Logging Denial of Service Vulnerability
16 Sep 202616:00
–cisco
cve
CVE		CVE-2026-20154
16 Sep 202620:13
–cve
cvelist
Cvelist		CVE-2026-20154 Cisco Secure Firewall Adaptive Security Appliance Software and Secure Firewall Threat Defense Software Logging Denial of Service
16 Sep 202620:13
–cvelist
euvd
EUVD		EUVD-2026-81128
16 Sep 202620:13
–euvd
nvd
NVD		CVE-2026-20154
16 Sep 202621:17
–nvd
ptsecurity
Positive Technologies		PT-2026-93955
16 Sep 202600:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)		CVE-2026-20154: Loop with Unreachable Exit Condition
16 Sep 202600:00
–rapid7
vulnrichment
Vulnrichment		CVE-2026-20154 Cisco Secure Firewall Adaptive Security Appliance Software and Secure Firewall Threat Defense Software Logging Denial of Service
16 Sep 202620:13
–vulnrichment
Vulners
Node
OR
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.0.0
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.0.0.1
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.0.1
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.0.1.1
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.0.2
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.0.2.1
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.0.3
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.0.4
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.0.5
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.0.6
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.0.6.1
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.0.6.2
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.0.6.3
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.0.7
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.0.8
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.0.8.1
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.2.0
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.2.0.1
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.2.1
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.2.2
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.2.3
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.2.4
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.2.4.1
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.2.5
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.2.5.1
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.2.6
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.2.7
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.2.5.2
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.2.8
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.2.8.1
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.2.9
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.2.10
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.2.10.2
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.3.0
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.3.1
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.3.1.1
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.3.1.2
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.4.0
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.4.1
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.4.1.1
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.4.2
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.4.2.1
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.4.2.2
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.4.2.3
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.4.2.4
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.4.3
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.6.0
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.6.1
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.6.2
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.6.2.1
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.7.0
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.7.10
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.7.10.1
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.4.4
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.6.4
cisco_systems,cisco_secure_firewall_threat_defense_(ftd)Match7.7.11
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.22.1.1
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.22.1.3
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.22.1.6
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.22.2
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.22.2.4
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.22.2.9
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.22.2.13
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.22.2.14
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.22.2.20
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.23.1
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.23.1.3
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.23.1.7
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.23.1.13
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.23.1.19
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.23.1.22
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.1
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.1.28
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.2
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.2.3
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.2.7
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.2.11
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.2.13
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.2.14
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.3
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.3.3
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.3.14
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.3.15
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.3.19
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.3.23
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.4
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.4.9
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.4.14
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.4.18
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.4.19
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.4.27
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.4.38
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.4.39
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.4.42
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.4.48
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.4.55
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.4.57
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.4.61
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.4.62
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.4.67
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.4.70
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.4.71
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.4.76
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.4.82
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.4.84
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.16.4.85
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.1
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.1.3
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.2
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.2.5
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.2.7
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.2.8
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.3
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.3.39
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.3.46
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.3.53
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.3.55
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.3.56
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.4
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.4.5
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.4.8
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.4.22
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.4.24
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.4.29
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.4.34
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.4.40
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.4.47
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.4.50
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.4.52
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.4.53
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.4.57
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.4.66
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.4.67
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.18.4.68
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.19.1
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.19.1.5
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.19.1.9
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.19.1.12
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.19.1.18
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.19.1.22
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.19.1.24
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.19.1.27
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.19.1.28
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.19.1.31
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.19.1.37
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.19.1.38
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.19.1.42
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.20.1
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.20.1.5
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.20.2
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.20.2.10
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.20.2.21
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.20.2.22
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.20.3
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.20.3.4
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.20.3.7
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.20.3.9
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.20.3.10
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.20.3.13
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.20.3.16
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.20.3.20
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.20.4
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.20.4.7
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.20.4.10
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.20.4.14
cisco_systems,cisco_secure_firewall_adaptive_security_appliance_(asa)Match9.22.1.2

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23 Sep 2026 00:00Current
6.4Medium risk
Vulners AI Score6.4
CVSS 27.8
CVSS 38.6
EPSS0.00404
Cisco Secure Firewall Threat Defense (FTD)Cisco Secure Firewall Adaptive Security Appliance (ASA)syslog 419002improper memory releaseservice failure
4