AS
Product
Adaptive Security Appliance Software
by Cisco · last CVE Aug 11, 2026
On CISA KEVExploited in the wildRansomware-linked
354
CVEs
14
On KEV
10.0
Max CVSS
0
New 30D
Severity mix
Critical 8High 106Medium 87Low 1
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CVECVSSEPSSPublishedSummary · affected versions
CVE-2019-1706
8.6
1%
May 3
A vulnerability in the software cryptography module of the Cisco Adaptive Security Virtual Appliance (ASAv) and Firepower 2100 Series running Cisco Adaptive Security Appliance…
Affected: 9.9 through 9.9.2.50
CVE-2019-1694
8.6
3%
May 3
A vulnerability in the TCP processing engine of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated,…
Affected: before 9.4.4.34
CVE-2018-15388
8.6
2%
May 3
A vulnerability in the WebVPN login process of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated,…
Affected: before 9.4.4.34
CVE-2018-15454
8.6
4%
Nov 1
A vulnerability in the Session Initiation Protocol (SIP) inspection engine of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software…
Affected: 9.4 before 9.4.4.27; 9.6 before 9.6.4.18; 9.8 before 9.8.3.16; 9.9 before 9.9.2.32; 9.10 before 9.10.1.2
CVE-2018-0240
8.6
4%
Apr 19
Multiple vulnerabilities in the Application Layer Protocol Inspection feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software…
Affected: 9.6.0.0 before 9.6.4.6; 9.7.0.0 before 9.7.1.24; 9.8.0.0 before 9.8.2.24; 9.9.0.0 before 9.9.1.4
CVE-2018-0231
8.6
4%
Apr 19
A vulnerability in the Transport Layer Security (TLS) library of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an…
Affected: 9.8(1); 98.1(1.154)
CVE-2018-0230
8.6
2%
Apr 19
A vulnerability in the internal packet-processing functionality of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series Security Appliances could allow an…
Affected: 9.8(2)
CVE-2018-0228
8.6
4%
Apr 19
A vulnerability in the ingress flow creation functionality of Cisco Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to cause the CPU to increase…
Affected: 9.1 before 9.1.7.20; 9.3 before 9.4.4.13; 9.5 before 9.6.3.17; 9.7 before 9.7.1.16; 9.8 before 9.8.2.14
CVE-2017-12246
8.6
7%
Oct 5
A vulnerability in the implementation of the direct authentication feature in Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to…
Affected: 9.4(3); 9.7(1); 9.8(0.56)
CVE-2017-6608
8.6
5%
Apr 20
A vulnerability in the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) code of Cisco ASA Software could allow an unauthenticated, remote attacker to cause a reload…
Affected: 9.0.1; 9.0.2; 9.0.2.10; 9.0.3; 9.0.3.6; 9.0.3.8; +34 more
CVE-2018-15465
8.1
2%
Dec 24
A vulnerability in the authorization subsystem of Cisco Adaptive Security Appliance (ASA) Software could allow an authenticated, but unprivileged (levels 0 and 1), remote attacker…
Affected: before 9.4.4.29
CVE-2012-5010
8.1
1%
Jun 27
ASA 5515-X Adaptive Security Appliance Adaptive Security Appliance (ASA) Software 9.4.x before 9.4.1 Interim, 9.2.x before 9.2.4 Interim, ASA 5510 Adaptive Security Appliance…
Affected: through 8.2\(4\)
CVE-2016-6432
8.1
7%
Oct 27
A vulnerability in the Identity Firewall feature of Cisco ASA Software before 9.6(2.1) could allow an unauthenticated, remote attacker to cause a reload of the affected system or…
Affected: 8.4.0; 8.4.2; 8.4.2.1; 8.4.2.8; 8.4.3; 8.4.3.8; +34 more
CVE-2020-3167
7.8
1%
Feb 26
A vulnerability in the CLI of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying…
Affected: 9.8 before 9.9.2.66; 9.10 before 9.12.3.6; 9.13 before 9.13.1.5
CVE-2019-1945
7.8
0%
Aug 7
Multiple vulnerabilities in the smart tunnel functionality of Cisco Adaptive Security Appliance (ASA) could allow an authenticated, local attacker to elevate privileges to the…
Affected: before 9.4.4.37
CVE-2026-20105
7.7
0%
Mar 4
A vulnerability in the Remote Access SSL VPN functionality of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Secure Firewall Threat Defense (FTD) Software…
Affected: 9.12.1 before 9.16.4.85; 9.17.1 before 9.18.4.66; 9.19.1 before 9.20.4; 9.22.1.1 before 9.22.2.4; 9.23.1 before 9.23.1.7
CVE-2026-20100
7.7
0%
Mar 4
A vulnerability in the LUA interperter of the Remote Access SSL VPN feature of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Secure Firewall Threat Defense…
Affected: 9.12.1; 9.12.1.2; 9.12.1.3; 9.12.2; 9.12.2.1; 9.12.2.4; +34 more
CVE-2026-20049
7.7
0%
Mar 4
A vulnerability in the processing of Galois/Counter Mode (GCM)-encrypted Internet Key Exchange version 2 (IKEv2) IPsec traffic of Cisco Secure Firewall Adaptive Security Appliance…
Affected: 9.18.1 before 9.18.4.66; 9.19.1 before 9.20.3.20; 9.22.1.1 before 9.22.2.4; 9.23.1 before 9.23.1.3
CVE-2026-20014
7.7
0%
Mar 4
A vulnerability in the IKEv2 feature of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an authenticated, remote attacker with valid VPN user…
Affected: 9.12.1 before 9.16.4.85; 9.17.1 before 9.18.4.66; 9.19.1 before 9.20.4; 9.22.1.1 before 9.22.2.9; 9.23.1 before 9.23.1.13
CVE-2025-20127
7.7
1%
Aug 14
A vulnerability in the TLS 1.3 implementation for a specific cipher for Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense…
Affected: 9.20.1; 9.20.1.5; 9.20.2; 9.20.2.10; 9.20.2.21; 9.20.2.22; +4 more
CVE-2024-20408
7.7
0%
Oct 23
A vulnerability in the Dynamic Access Policies (DAP) feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an…
Affected: 9.8.1; 9.8.1.5; 9.8.1.7; 9.8.2; 9.8.2.8; 9.8.2.14; +34 more
CVE-2024-20268
7.7
1%
Oct 23
A vulnerability in the Simple Network Management Protocol (SNMP) feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software…
Affected: 9.14.1; 9.14.1.6; 9.14.1.10; 9.14.1.15; 9.14.1.19; 9.14.1.30; +34 more
CVE-2021-1422
7.7
1%
Jul 16
A vulnerability in the software cryptography module of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an…
Affected: 9.16.1
CVE-2017-6610
7.7
3%
Apr 20
A vulnerability in the Internet Key Exchange Version 1 (IKEv1) XAUTH code of Cisco ASA Software could allow an authenticated, remote attacker to cause a reload of an affected…
Affected: 9.0.1; 9.0.2; 9.0.2.10; 9.0.3; 9.0.3.6; 9.0.3.8; +34 more
CVE-2017-6609
7.7
3%
Apr 20
A vulnerability in the IPsec code of Cisco ASA Software could allow an authenticated, remote attacker to cause a reload of the affected system
Affected: 9.0.1; 9.0.2; 9.0.2.10; 9.0.3; 9.0.3.6; 9.0.3.8; +34 more
CVE-2023-20006
7.5
1%
Jun 28
A vulnerability in the hardware-based SSL/TLS cryptography functionality of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software for…
Affected: 9.16.4; 9.18.2; 9.18.2.5
CVE-2022-20947
7.5
1%
Nov 15
A vulnerability in dynamic access policies (DAP) functionality of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an…
Affected: 9.6.1; 9.6.1.3; 9.6.1.5; 9.6.1.10; 9.6.2; 9.6.2.1; +34 more
CVE-2022-20866
7.5
19%
Aug 10
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software RSA Private Key Leak Vulnerability
Affected: 9.16.0 before 9.16.3.19; 9.17.0 before 9.17.1.13; 9.18.0 before 9.18.2
CVE-2022-20760
7.5
2%
May 3
A vulnerability in the DNS inspection handler of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated,…
Affected: before 9.12.4.38; 9.13.0 before 9.14.4; 9.15.0 before 9.15.1.21; 9.16.0 before 9.16.2.14; 9.17.0 before 9.17.1.7
CVE-2022-20745
7.5
1%
May 3
A vulnerability in the web services interface for remote access VPN features of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software…
Affected: before 9.12.4.38; 9.13.0 before 9.14.4; 9.15.0 before 9.15.1.21; 9.16.0 before 9.16.2.14; 9.17.0 before 9.17.1.7
CVE-2022-20795
7.5
1%
Apr 21
A vulnerability in the implementation of the Datagram TLS (DTLS) protocol in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software…
Affected: 9.17.0 through 9.17.1.9
CVE-2021-34704
7.5
1%
Jan 11
A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated,…
Affected: 9.15 before 9.15.1.17; 9.16 before 9.16.2
CVE-2021-1573
7.5
1%
Jan 11
A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated,…
Affected: 9.8 before 9.8.4.40; 9.9 before 9.12.4.26; 9.13 before 9.14.3; 9.15 before 9.15.1.17; 9.16 before 9.16.1.28
CVE-2021-40118
7.5
1%
Oct 27
A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated,…
Affected: 9.9.0 before 9.12.4.29; 9.13.0 before 9.14.3.9; 9.15.0 before 9.15.1.17; 9.16.0 before 9.16.2.3
CVE-2021-40117
7.5
2%
Oct 27
A vulnerability in SSL/TLS message handler for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated,…
Affected: 9.9.0 before 9.12.4.26; 9.13.0 before 9.14.3.9; 9.15.0 before 9.15.1.17; 9.16.0 before 9.16.2.3
CVE-2021-34792
7.5
1%
Oct 27
A vulnerability in the memory management of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote…
Affected: 9.8.0 before 9.8.4.40; 9.12.0 before 9.12.4.29; 9.14.0 before 9.14.3.9; 9.15.0 before 9.15.1.17; 9.16.0 before 9.16.2.3
CVE-2021-34783
7.5
2%
Oct 27
A vulnerability in the software-based SSL/TLS message handler of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an…
Affected: 9.8.0 before 9.8.4.40; 9.12.0 before 9.12.4.29; 9.14.0 before 9.14.3.9; 9.15.0 before 9.15.1.17; 9.16.0 before 9.16.2
CVE-2021-1504
7.5
2%
Apr 29
Multiple vulnerabilities in Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a…
Affected: 9.7 before 9.8.4.35; 9.9 before 9.9.2.85; 9.10 before 9.12.4.10; 9.13 before 9.13.1.21; 9.14 before 9.14.2.4; 9.15 before 9.15.1.7
CVE-2021-1501
7.5
1%
Apr 29
A vulnerability in the SIP inspection engine of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated,…
Affected: 9.8 before 9.8.4.34; 9.9 before 9.9.2.85; 9.10 before 9.12.4.18; 9.13 before 9.13.1.21; 9.14 before 9.14.2.13; 9.15 before 9.15.1.15
CVE-2021-1445
7.5
2%
Apr 29
Multiple vulnerabilities in Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a…
Affected: 9.7 before 9.8.4.34; 9.9 before 9.9.2.85; 9.10 before 9.12.4.13; 9.13 before 9.13.1.21; 9.14 before 9.14.2.8; 9.15 before 9.15.1.7
CVE-2020-3555
7.5
2%
Oct 21
A vulnerability in the SIP inspection process of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated,…
Affected: 9.7.0 before 9.8.4.24; 9.9.0 before 9.9.2.80; 9.10.0 before 9.10.1.43; 9.12.0 before 9.12.4.2; 9.13.0 before 9.13.1.13; 9.14.0 before 9.14.1.19
CVE-2020-3554
7.5
3%
Oct 21
A vulnerability in the TCP packet processing of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated,…
Affected: 9.13.0 before 9.13.1.13; 9.14.0 before 9.14.1.30
CVE-2020-3529
7.5
2%
Oct 21
A vulnerability in the SSL VPN negotiation process for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an…
Affected: 9.8.0 before 9.8.4.29; 9.9.0 before 9.9.2.80; 9.10.0 before 9.10.1.44; 9.12.0 before 9.12.4.4; 9.13.0 before 9.13.1.13; 9.14.0 before 9.14.1.30
CVE-2020-3528
7.5
1%
Oct 21
A vulnerability in the OSPF Version 2 (OSPFv2) implementation of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an…
Affected: 9.8.0 before 9.8.4.26; 9.9.0 before 9.9.2.80; 9.10.0 before 9.10.1.44; 9.12.0 before 9.12.4.4; 9.13.0 before 9.13.1.13; 9.14.0 before 9.14.1.19
CVE-2020-3306
7.5
1%
May 6
A vulnerability in the DHCP module of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote…
Affected: 9.7 before 9.8.4.10; 9.9 before 9.10.1.30; 9.12 before 9.12.3
CVE-2020-3305
7.5
1%
May 6
A vulnerability in the implementation of the Border Gateway Protocol (BGP) module in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD)…
Affected: 9.7 before 9.8.4.10; 9.9 before 9.10.1.30; 9.12 before 9.12.2.9
CVE-2020-3303
7.5
1%
May 6
A vulnerability in the Internet Key Exchange version 1 (IKEv1) feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could…
Affected: 9.7 before 9.8.4.10; 9.9 before 9.10.1.30; 9.12 before 9.12.2.9
CVE-2020-3298
7.5
2%
May 6
A vulnerability in the Open Shortest Path First (OSPF) implementation of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could…
Affected: 9.6.0 through 9.6.4.40; 9.8.0 through 9.8.4.17; 9.9.0 through 9.9.2.66; 9.10.0 through 9.10.1.37; 9.12.0 through 9.12.3.7; 9.13.0 through 9.13.1.7
CVE-2020-3254
7.5
2%
May 6
Multiple vulnerabilities in the Media Gateway Control Protocol (MGCP) inspection feature of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD)…
Affected: 9.6 before 9.6.4.34; 9.8 before 9.8.4.7; 9.9 before 9.9.2.66; 9.10 before 9.10.1.27; 9.12 before 9.12.2.1
CVE-2020-3195
7.5
2%
May 6
A vulnerability in the Open Shortest Path First (OSPF) implementation in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could…
Affected: 9.12 before 9.12.3.2; 9.13 before 9.13.1.7
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