CVE-2021-40118

CVE-2021-40118 affects Cisco ASA/FTD web services. The vulnerability arises from improper input validation when parsing HTTPS requests, allowing an unauthenticated, remote attacker to trigger a DoS condition by sending a malicious HTTPS request, potentially causing the device to reload. The issue...

CVE-2021-40117

CVE-2021-40117 affects Cisco ASA and Firepower Threat Defense (FTD) Software. The issue is in the SSL/TLS message handler where incoming packets are not properly processed, allowing an unauthenticated remote attacker to trigger a reload of the device and cause a denial-of-service (DoS). Exploitat...

CVE-2021-34794 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SNMP Access Control Vulnerability

A vulnerability in the Simple Network Management Protocol version 3 SNMPv3 access control functionality of Cisco Adaptive Security Appliance ASA Software and Cisco Firepower Threat Defense FTD Software could allow an unauthenticated, remote attacker to query SNMP data. This vulnerability is due t...

CVE-2021-34794

CVE-2021-34794 affects Cisco ASA/FTD SNMPv3 access control. An attacker could query SNMP data from a device if not permitted by the SNMPv3 ACL, due to ineffective access control. The exploit requires valid SNMP credentials, enabling data retrieval without broader compromise. Cisco has released so...

CVE-2021-34793 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Transparent Mode Denial of Service Vulnerability

A vulnerability in the TCP Normalizer of Cisco Adaptive Security Appliance ASA Software and Firepower Threat Defense FTD Software operating in transparent mode could allow an unauthenticated, remote attacker to poison MAC address tables, resulting in a denial of service DoS vulnerability. This...

CVE-2021-34793

CVE-2021-34793 is a DoS vulnerability in Cisco ASA/FTD software (transparent mode) due to improper handling of certain TCP segments by the TCP Normalizer, allowing an unauthenticated remote attacker to poison MAC address tables and disrupt networks. Affected products include Cisco ASA and Cisco F...

CVE-2021-34792

Cisco CVE-2021-34792 affects Cisco ASA Software and Firepower Threat Defense (FTD) due to a memory management/resource handling flaw under high connection rates. An unauthenticated, remote attacker could cause a DoS by opening a large number of connections, potentially causing the device to reloa...

CVE-2021-34792 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Resource Exhaustion Denial of Service Vulnerability

A vulnerability in the memory management of Cisco Adaptive Security Appliance ASA Software and Firepower Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause a denial of service DoS condition on an affected device. This vulnerability is due to improper resource...

CVE-2021-34791

Cisco ASA and Firepower Threat Defense (FTD) software contain multiple ALG/NAT bypass vulnerabilities (NAT Slipstreaming) due to an incorrect implementation of security checks in the ALG/NAT handling, allowing unauthenticated remote actors to bypass the ALG and open unauthorized connections behin...

CVE-2021-34791 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Application Level Gateway Bypass Vulnerabilities

Multiple vulnerabilities in the Application Level Gateway ALG for the Network Address Translation NAT feature of Cisco Adaptive Security Appliance ASA Software and Firepower Threat Defense FTD Software could allow an unauthenticated, remote attacker to bypass the ALG and open unauthorized...

CVE-2021-34791 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Application Level Gateway Bypass Vulnerabilities

Multiple vulnerabilities in the Application Level Gateway ALG for the Network Address Translation NAT feature of Cisco Adaptive Security Appliance ASA Software and Firepower Threat Defense FTD Software could allow an unauthenticated, remote attacker to bypass the ALG and open unauthorized...

CVE-2021-34790

CVE-2021-34790 describes multiple vulnerabilities in the Application Level Gateway (ALG) for the NAT feature in Cisco ASA and Firepower Threat Defense (FTD) software that could allow an unauthenticated, remote attacker to bypass the ALG and open unauthorized connections to hosts behind the ALG. A...

CVE-2021-34787 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Identity-Based Rule Bypass Vulnerability

A vulnerability in the identity-based firewall IDFW rule processing feature of Cisco Adaptive Security Appliance ASA Software and Cisco Firepower Threat Defense FTD Software could allow an unauthenticated, remote attacker to bypass security protections. This vulnerability is due to improper...

CVE-2021-34787 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Identity-Based Rule Bypass Vulnerability

A vulnerability in the identity-based firewall IDFW rule processing feature of Cisco Adaptive Security Appliance ASA Software and Cisco Firepower Threat Defense FTD Software could allow an unauthenticated, remote attacker to bypass security protections. This vulnerability is due to improper...

CVE-2021-34787

Cisco ASA/FTD IDFW rule-bypass (CVE-2021-34787) affects Identity-Based Rule Processing in ASA Software and FTD. Affected devices that use object group search may mishandle certain network requests, allowing an unauthenticated remote attacker to bypass ACLs and security protections, potentially se...

CVE-2021-34783

CVE-2021-34783 affects Cisco ASA and Firepower Threat Defense (FTD) software’s SSL/TLS decryption path. The vulnerability arises from insufficient validation of SSL/TLS messages in the software-based TLS handler, allowing an unauthenticated, remote attacker to force a device reload and cause a Do...

CVE-2021-34783 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Software-Based SSL/TLS Denial of Service Vulnerability

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 unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service DoS condition. This...

CVE-2021-34783 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Software-Based SSL/TLS Denial of Service Vulnerability

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 unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service DoS condition. This...

CVE-2021-34781

The CVE-2021-34781 issue affects Cisco Firepower Threat Defense (FTD) Software in multi-Instance deployments, where improper error handling during SSH session establishment allows an unauthenticated, remote attacker to trigger resource exhaustion and a DoS condition. Exploitation involves sending...

CVE-2021-34761

CVE-2021-34761 affects Cisco Firepower Threat Defense (FTD) Software. The issue stems from incomplete validation of user input for a specific CLI command, enabling an authenticated local attacker (with administrative credentials) to overwrite or append arbitrary data to system files with root-lev...