Search vulnerabilities

Results 15,576

Export CSV
CVE-2026-20024

OSPF Heap Corruption Causing Device Restart on Cisco Secure Firewall ASA and FTD

A vulnerability in the OSPF protocol of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an authenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a DoS condition. To exploit this vulnerability, the attacker must have the OSPF secret key. This vulnerability is due to heap corruption in OSPF when parsing packets. An attacker could exploit this vulnerability by sending crafted packets to the OSPF service. A successful exploit could allow the attacker to corrupt the heap, causing the affected device to reload, resulting in a DoS condition.

CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
Vendors
CVE-2019-12673

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software FTP Inspection Denial of Service Vulnerability

A vulnerability in the FTP inspection engine of Cisco Adaptive Security (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient validation of FTP data. An attacker could exploit this vulnerability by sending malicious FTP traffic through an affected device. A successful exploit could allow the attacker to cause a DoS condition on the affected device.

CVSS 3.1 · 7.5 High EPSS 1.8% KEV · Not listed
Vendors
CVE-2021-40117

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SSL/TLS Denial of Service Vulnerability

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, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability exists because incoming SSL/TLS packets are not properly processed. An attacker could exploit this vulnerability by sending a crafted SSL/TLS packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

CVSS 3.1 · 8.6 High EPSS 1.7% KEV · Not listed
Vendors
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 vulnerability is due to insufficient validation of SSL/TLS messages when the device performs software-based SSL/TLS decryption. An attacker could exploit this vulnerability by sending a crafted SSL/TLS message to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Note: Datagram TLS (DTLS) messages cannot be used to exploit this vulnerability.

CVSS 3.1 · 8.6 High EPSS 1.6% KEV · Not listed
Vendors
CVE-2019-15992

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Remote Code Execution Vulnerability

A vulnerability in the implementation of the Lua interpreter integrated in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to execute arbitrary code with root privileges on the underlying Linux operating system of an affected device. The vulnerability is due to insufficient restrictions on the allowed Lua function calls within the context of user-supplied Lua scripts. A successful exploit could allow the attacker to trigger a heap overflow condition and execute arbitrary code with root privileges on the underlying Linux operating system of an affected device.

CVSS 3.1 · 7.2 High EPSS 4.1% KEV · Not listed
Vendors
CVE-2021-34781

Cisco Firepower Threat Defense Software SSH Connections Denial of Service Vulnerability

A vulnerability in the processing of SSH connections for multi-instance deployments of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on the affected device. This vulnerability is due to a lack of proper error handling when an SSH session fails to be established. An attacker could exploit this vulnerability by sending a high rate of crafted SSH connections to the instance. A successful exploit could allow the attacker to cause resource exhaustion, which causes a DoS condition on the affected device. The device must be manually reloaded to recover.

CVSS 3.1 · 8.6 High EPSS 1.4% KEV · Not listed
Vendors
CVE-2022-20947

A vulnerability in dynamic access policies (DAP) functionality 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 vulnerability is due to improper processing of HostScan data received from the Posture (HostScan) module. An attacker could exploit this vulnerability by sending crafted HostScan data to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-dap-dos-GhYZBxDU ["https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-dap-dos-GhYZBxDU"] This advisory is part of the November 2022 release of the Cisco ASA, FTD, and FMC Security Advisory Bundled publication.

CVSS 3.1 · 8.6 High EPSS 1.0% KEV · Not listed
Vendors
CVE-2020-3562

Cisco Firepower 2100 Series SSL/TLS Inspection Denial of Service Vulnerability

A vulnerability in the SSL/TLS inspection of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series firewalls could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper input validation for certain fields of specific SSL/TLS messages. An attacker could exploit this vulnerability by sending a malformed SSL/TLS message through an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. No manual intervention is needed to recover the device after it has reloaded.

CVSS 3.1 · 8.6 High EPSS 1.8% KEV · Not listed
Vendors
CVE-2021-1402

Cisco Firepower Threat Defense Software SSL Decryption Policy Denial of Service Vulnerability

A vulnerability in the software-based SSL/TLS message handler of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient validation of SSL/TLS messages when the device performs software-based SSL decryption. An attacker could exploit this vulnerability by sending a crafted SSL/TLS message through an affected device. SSL/TLS messages sent to an affected device do not trigger this vulnerability. A successful exploit could allow the attacker to cause a process to crash. This crash would then trigger a reload of the device. No manual intervention is needed to recover the device after the reload.

CVSS 3.1 · 8.6 High EPSS 1.4% KEV · Not listed
Vendors
Products
CVE-2020-3283

Cisco Firepower 1000 Series SSL/TLS Denial of Service Vulnerability

A vulnerability in the Secure Sockets Layer (SSL)/Transport Layer Security (TLS) handler of Cisco Firepower Threat Defense (FTD) Software when running on the Cisco Firepower 1000 Series platform could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition on an affected device. The vulnerability is due to a communication error between internal functions. An attacker could exploit this vulnerability by sending a crafted SSL/TLS message to an affected device. A successful exploit could allow the attacker to cause a buffer underrun, which leads to a crash. The crash causes the affected device to reload.

CVSS 3.1 · 8.6 High EPSS 2.0% KEV · Not listed
Vendors
Products
CVE-2026-8158

Signed Video Framework Buffer Overflow Causes Crash

The Signed Video Framework contained a  buffer overflow issue which could lead the application using this framework to crash. The issue exclusively affects the tools used for the validation of signed content. The AXIS OS device's signed video functionality remains unaffected.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
CVE-2021-41839

An issue was discovered in NvmExpressDxe in the kernel 5.0 through 5.5 in Insyde InsydeH2O. Because of an Untrusted Pointer Dereference that causes SMM memory corruption, an attacker may be able to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.

CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed
Vendors
Products
CVE-2021-41838

An issue was discovered in SdHostDriver in the kernel 5.0 through 5.5 in Insyde InsydeH2O. There is an SMM callout that allows an attacker to access the System Management Mode and execute arbitrary code. This occurs because of a Numeric Range Comparison Without a Minimum Check.

CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed
Vendors
CVE-2021-41837

An issue was discovered in AhciBusDxe in the kernel 5.0 through 5.5 in Insyde InsydeH2O. Because of an Untrusted Pointer Dereference that causes SMM memory corruption, an attacker may be able to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.

CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed
Vendors
CVE-2021-33627

An issue was discovered in Insyde InsydeH2O Kernel 5.0 before 05.09.11, 5.1 before 05.17.11, 5.2 before 05.27.11, 5.3 before 05.36.11, 5.4 before 05.44.11, and 5.5 before 05.52.11 affecting FwBlockServiceSmm. Software SMI services that use the Communicate() function of the EFI_SMM_COMMUNICATION_PROTOCOL do not check whether the address of the buffer is valid, which allows use of SMRAM, MMIO, or OS kernel addresses.

CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed
Vendors
CVE-2021-33625

An issue was discovered in Kernel 5.x in Insyde InsydeH2O, affecting HddPassword. Software SMI services that use the Communicate() function of the EFI_SMM_COMMUNICATION_PROTOCOL do not check whether the address of the buffer is valid, which allows use of SMRAM, MMIO, or OS kernel addresses.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
CVE-2026-19341

UTT HiPER 1200GW pptpSrvGlobalConfig strcpy stack-based overflow

A security vulnerability has been detected in UTT HiPER 1200GW up to 2.5.3-170306. This impacts the function strcpy of the file /goform/pptpSrvGlobalConfig. Such manipulation of the argument EncryptionMode leads to stack-based buffer overflow. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Utt
Products
CVE-2026-19259

MZ Automation libiec61850 MMS Protocol Workflow iec61850_common.c MmsMapping_varAccessSpecToObjectReference heap-based overflow

A vulnerability has been found in MZ Automation libiec61850 up to 1.6.1. The affected element is the function MmsMapping_varAccessSpecToObjectReference of the file src/iec61850/common/iec61850_common.c of the component MMS Protocol Workflow. Such manipulation of the argument GetNamedVariableListAttributesResponse.itemId leads to heap-based buffer overflow. The attack must be carried out locally. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed
CVE-2026-19108

MZ Automation libiec61850 URCB Revalidation reporting.c deleteDataSetValuesShadowBuffer use after free

A vulnerability was found in MZ Automation libiec61850 up to 1.6.1. The affected element is the function deleteDataSetValuesShadowBuffer of the file src/iec61850/server/mms_mapping/reporting.c of the component URCB Revalidation. The manipulation results in use after free. The attack needs to be approached locally. The exploit has been made public and could be used. Upgrading to version 1.6.2 is sufficient to fix this issue. The patch is identified as 486fd57f3aed65bb9d636ff00f9ddce2e450b168. Upgrading the affected component is advised.

CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed