CVE-2026-20084

A vulnerability in the DHCP snooping feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause BOOTP packets to be forwarded between VLANs, resulting in a denial of service DoS condition. This vulnerability is due to improper handling of BOOTP packets on Cisco...

Vulnerabilities fixed in Cisco IOS XE Software

Cisco has fixed vulnerabilities in Cisco IOS XE Software, specifically for several products such as Catalyst 9000 Series Switches, Catalyst CW9800 Family, and Cisco Meraki. The vulnerabilities include several issues, such as a memory leak in the IKEv2 implementation, vulnerabilities in the DHCP...

EUVD-2026-15431

A vulnerability in the DHCP snooping feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause BOOTP packets to be forwarded between VLANs, resulting in a denial of service DoS condition. This vulnerability is due to improper handling of BOOTP packets on Cisco...

CVE-2026-20084

A vulnerability in the DHCP snooping feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause BOOTP packets to be forwarded between VLANs, resulting in a denial of service DoS condition. This vulnerability is due to improper handling of BOOTP packets on Cisco...

PT-2026-27790

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software affected versions not specified Description A flaw exists in the DHCP snooping feature that may allow a remote attacker to forward BOOTP packets between VLANs, leading to a denial of service DoS. This is caused by imprope...

EUVD-2022-26060

Malicious code in bioql PyPI...

EUVD-2022-26097

Malicious code in bioql PyPI...

EUVD-2022-25934

Malicious code in bioql PyPI...

EUVD-2021-6920

Malicious code in bioql PyPI...

EUVD-2022-25931

Malicious code in bioql PyPI...

CVE-2025-20311

A vulnerability in the handling of certain Ethernet frames in Cisco IOS XE Software for Catalyst 9000 Series Switches could allow an unauthenticated, adjacent attacker to cause an egress port to become blocked and drop all outbound traffic. This vulnerability is due to improper handling of crafte...

CVE-2025-20311

A vulnerability in the handling of certain Ethernet frames in Cisco IOS XE Software for Catalyst 9000 Series Switches could allow an unauthenticated, adjacent attacker to cause an egress port to become blocked and drop all outbound traffic. This vulnerability is due to improper handling of crafte...

Cisco IOS XE Software for Catalyst 9000 Series Switches Denial of Service Vulnerability

A vulnerability in the handling of certain Ethernet frames in Cisco IOS XE Software for Catalyst 9000 Series Switches could allow an unauthenticated, adjacent attacker to cause an egress port to become blocked and drop all outbound traffic. This vulnerability is due to improper handling of crafte...

PT-2025-39299

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software for Catalyst 9000 Series Switches affected versions not specified Description A flaw exists in how certain Ethernet frames are processed, potentially allowing a nearby, unauthenticated attacker to disrupt network traffic...

Cisco Catalyst 9000 Series Switches Denial of Service Vulnerability

A vulnerability in Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service DoS condition on the control plane of an affected device. This vulnerability is due to improper handling of frames with VLAN tag information. An attacker could exploit this...

Cisco IOS XE Software Wireless Controller for the Catalyst 9000 Family CAPWAP Mobility DoS (cisco-sa-c9800-mob-dos-342YAc6J)

A vulnerability in the processing of Control and Provisioning of Wireless Access Points CAPWAP Mobility messages in Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family could allow an unauthenticated, remote attacker to cause a denial of service DoS condition on an affected...

Cisco IOS XE Software Wireless Controller for the Catalyst 9000 Family SNMP Information Disclosure (cisco-sa-cwlc-snmpidv-rnyyQzUZ)

According to its self-reported version, Cisco IOS-XE Software is affected by an information disclosure vulnerability. Due to insufficient restrictions in the implementation of the simple network management protocol, a remote, authenticated attacker could retrieve service set identifier SSID...

CVE-2022-20847

A vulnerability in the DHCP processing functionality of Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family could allow an unauthenticated, remote attacker to cause a denial of service DoS condition. This vulnerability is due to the improper processing of DHCP messages. An...

CVE-2022-20847

A vulnerability in the DHCP processing functionality of Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family could allow an unauthenticated, remote attacker to cause a denial of service DoS condition. This vulnerability is due to the improper processing of DHCP messages. An...

CVE-2022-20810

A vulnerability in the Simple Network Management Protocol SNMP of Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family could allow an authenticated, remote attacker to access sensitive information. This vulnerability is due to insufficient restrictions that allow a sensitive...