CVE-2026-20104

Cisco IOS XE bootloader vulnerability (CVE-2026-20104) affects Catalyst 9200 series, ESS9300 Embedded, IE9310/IE9320 Rugged, and IE3500/IE3505 Rugged switches. Root cause: insufficient validation of boot-time software, allowing manipulation of loaded binaries to bypass boot-time integrity checks ...

PT-2026-27792

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches Cisco Catalyst ESS9300 Embedded Series Switches Cisco Catalyst IE9310 and IE9320 Rugged Series Switches Cisco IE3500 and IE3505 Rugged Series Switches Description A flaw exists in t...

Cisco多款产品 安全漏洞

The Cisco Catalyst 9200 Series Switches are switches produced by the American company Cisco. The Cisco Catalyst is a series of switches developed by Cisco. Several of Cisco’s products have security vulnerabilities. These vulnerabilities stem from insufficient software validation during startup,...

The vulnerability of the system check function in Cisco IOS XE for Cisco Catalyst 9200 Series network devices allows a hacker to execute arbitrary code.

The vulnerability of the Cisco IOS XE software’s network device authentication function on the Cisco Catalyst 9200 series devices is related to improper verification of the cryptographic signature. Exploiting this vulnerability allows an attacker to execute arbitrary code...

CVE-2022-20944

A vulnerability in the software image verification functionality of Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches could allow an unauthenticated, physical attacker to execute unsigned code at system boot time. This vulnerability is due to an improper check in the code function tha...

Input validation

A vulnerability in the software image verification functionality of Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches could allow an unauthenticated, physical attacker to execute unsigned code at system boot time. This vulnerability is due to an improper check in the code function tha...

CVE-2022-20944

CVE-2022-20944 concerns Cisco IOS XE for Catalyst 9200 Series Switches . It exploits an improper check in the image verification that occurs during system boot, allowing an unauthenticated, physical attacker to load unsigned software and potentially boot malicious code or bypass the verification ...

CVE-2022-20944 Cisco IOS XE Software for Catalyst 9200 Series Switches Arbitrary Code Execution Vulnerability

A vulnerability in the software image verification functionality of Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches could allow an unauthenticated, physical attacker to execute unsigned code at system boot time. This vulnerability is due to an improper check in the code function tha...

CVE-2022-20944 Cisco IOS XE Software for Catalyst 9200 Series Switches Arbitrary Code Execution Vulnerability

A vulnerability in the software image verification functionality of Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches could allow an unauthenticated, physical attacker to execute unsigned code at system boot time. This vulnerability is due to an improper check in the code function tha...

Cisco IOS XE Software for Catalyst 9200 Series Switches Arbitrary Code Execution Vulnerability

A vulnerability in the software image verification functionality of Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches could allow an unauthenticated, physical attacker to execute unsigned code at system boot time. This vulnerability is due to an improper check in the code function tha...

CVE-2022-20944

A vulnerability in the software image verification functionality of Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches could allow an unauthenticated, physical attacker to execute unsigned code at system boot time. This vulnerability is due to an improper check in the code function tha...

Cisco Catalyst 9200 Series Switches 数据伪造问题漏洞

Cisco Catalyst 9200 Series Switches is a switch from Cisco, U.S. A data forgery vulnerability exists in the software image validation feature of Cisco Catalyst 9200 Series Switches, which could be exploited by an attacker to execute unsigned code at system startup...

PT-2022-6390 · Cisco · Cisco Ios Xe

Name of the Vulnerable Software and Affected Versions: Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches versions prior to 16.11.1 Description: A vulnerability in the software image verification functionality could allow an unauthenticated, physical attacker to execute unsigned code a...

Cisco Catalyst 9200 Series Switches Jumbo Frame DoS (cisco-sa-JP-DOS-g5FfGm8y)

According to its self-reported version, Cisco IOS XE Software is affected by a denial of service vulnerability due to insufficient packet size validation. An unauthenticated, remote attacker can exploit this, by sending jumbo frames or frames larger than the configured MTU size to the management...

Cisco IOS XE Software for Catalyst 9200 Series Switches Umbrella Connector DoS (cisco-sa-iosxe-umbrella-dos-t2QMUX37)

According to its self-reported version, IOS-XE is affected by a DoS vulnerability in the Umbrella Connector component of Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches due to insufficient error handling when parsing DNS requests. An unauthenticated, remote attacker could exploit th...

The vulnerability of the Umbrella Connector component in Cisco IOS XE software for Cisco Catalyst 9200 Series network devices allows a hacker to induce a service failure.

The vulnerability of the Umbrella Connector component in the Cisco IOS XE software for Cisco Catalyst 9200 Series network devices is related to incorrect error handling. Exploiting this vulnerability can allow an attacker to cause service interruptions remotely...

Cisco Catalyst 9200 Series Switch Denial of Service Vulnerability

The Cisco Catalyst 9200 is a family of entry-level stackable enterprise network switches from Cisco. A denial-of-service vulnerability exists in the Polaris kernel of the Cisco Catalyst 9200 series switches, which can be exploited by an attacker to cause a complete device crash by sending jumbo...

Cisco IOS XE Denial of Service Vulnerability (CNVD-2021-43441)

Cisco IOS XE is a set of modular operating system based on Linux kernel developed by Cisco for its network equipment. A denial-of-service vulnerability exists in the Umbrella Connector component of Cisco IOS XE used in Cisco Catalyst 9200 series switches, which can be exploited by an attacker by...

CVE-2020-3510

A vulnerability in the Umbrella Connector component of Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches could allow an unauthenticated, remote attacker to trigger a reload, resulting in a denial of service condition on an affected device. The vulnerability is due to insufficient erro...

CVE-2020-3527

A vulnerability in the Polaris kernel of Cisco Catalyst 9200 Series Switches could allow an unauthenticated, remote attacker to crash the device. The vulnerability is due to insufficient packet size validation. An attacker could exploit this vulnerability by sending jumbo frames or frames larger...