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...

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...

CVE-2026-20084

CVE-2026-20084 describes a vulnerability in the DHCP snooping feature of Cisco IOS XE Software affecting Cisco Catalyst 9000 Series switches. The issue arises from improper handling of BOOTP packets, which could allow an unauthenticated remote attacker to forward BOOTP packets between VLANs. The ...

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

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...

Cisco IOS XE Software for Catalyst Rugged Series Switches Secure Boot Bypass (cisco-sa-xe-secureboot-bypass-B6uYxYSZ)

According to its self-reported version, Cisco IOS-XE Software is affected by a vulnerability. - A vulnerability in the bootloader of Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches, Cisco Catalyst ESS9300 Embedded Series Switches, Cisco Catalyst IE9310 and IE9320 Rugged Series...

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,...

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...

Cisco Catalyst SD-WAN Manager（Cisco SD-WAN vManage） 跨站脚本漏洞

Cisco Catalyst SD-WAN Manager is a highly customizable dashboard provided by the American company Cisco. It simplifies and automates the deployment, configuration, management, and operation of Cisco SD-WAN. Cisco Catalyst SD-WAN Manager has a cross-site scripting vulnerability, which stems from...

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...

PT-2026-27793

Name of the Vulnerable Software and Affected Versions Cisco Catalyst SD-WAN Manager affected versions not specified Description A flaw exists in the web-based management interface that may allow a remote attacker with valid credentials to perform a cross-site scripting XSS attack against a user...

PT-2026-27791

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Wireless Controller Software for the Catalyst CW9800 Family affected versions not specified Description A flaw exists in how the software processes Control and Provisioning of Wireless Access Points CAPWAP packets. This could allo...

Cisco Catalyst SD-WAN Manager XSS (cisco-sa-vmanage-xss-ZqkhP9W9)

According to its self-reported version, Cisco SD-WAN Viptela Software is affected by a vulnerability. - A vulnerability in the web-based management interface of Cisco Catalyst SD-WAN Manager could allow an authenticated, remote attacker to conduct a cross-site scripting XSS attack against a user ...

Rapid7 Analysis: CVE-2026-20127

CVE-2026-20127: Cisco Catalyst SD-WAN Authentication Bypass Overview On 25th February 2026, Cisco published an advisory for CVE-2026-20127, a critical authentication bypass vulnerability in the vdaemon service of Cisco Catalyst SD-WAN formerly Viptela. The flaw allows an unauthenticated, remote...

Vulnerabilities fixed in Cisco Catalyst SD-WAN Manager

Cisco has fixed several vulnerabilities in the Cisco Catalyst SD-WAN Manager. The vulnerabilities are in the peering authentication mechanisms of the Cisco Catalyst SD-WAN Controller and Manager products. These vulnerabilities allow an unauthenticated remote attacker to bypass the authentication...

Exploit for Improper Authentication in Cisco Catalyst_Sd-Wan_Manager

CVE-2026-20127EXP Cisco Catalyst SD-WAN authentication bypa...

Cisco Confirms Active Exploitation of Two Catalyst SD-WAN Manager Vulnerabilities

Cisco has disclosed that two more vulnerabilities affecting Catalyst SD-WAN Manager formerly SD-WAN vManage have come under active exploitation in the wild. The vulnerabilities in question are listed below - CVE-2026-20122 CVSS score: 7.1 - An arbitrary file overwrite vulnerability that could all...

Exploit for Improper Authentication in Cisco Catalyst_Sd-Wan_Manager

CVE-2026‑20127 – Remote Authentication Bypass for Cisco Cataly...

📄 Cisco Catalyst SD-WAN Controller Authentication Bypass / Arbitrary WAR Upload

A critical security vulnerability chain was identified involving an authentication bypass through exposed configuration data, followed by an arbitrary file upload via path traversal. Successful exploitation may allow an attacker to deploy a malicious WAR archive into the application server's...

VulnCheck KEV: CVE-2026-20122

A vulnerability in the API of Cisco Catalyst SD-WAN Manager could allow an authenticated, remote attacker to overwrite arbitrary files on the local file system. To exploit this vulnerability, the attacker must have valid read-only credentials with API access on the affected system. This...

VulnCheck KEV: CVE-2026-20128

A vulnerability in the Data Collection Agent DCA feature of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to gain DCA user privileges on an affected system. This vulnerability is due to the presence of a credential file for the DCA user on an affected system. An...