Cisco Confirms Lively Exploitation of Two Catalyst SD-WAN Supervisor Vulnerabilities

Ravie LakshmananMar 05, 2026Vulnerability / Enterprise Safety

Cisco has disclosed that two extra vulnerabilities affecting Catalyst SD-WAN Supervisor (previously SD-WAN vManage) have come below energetic exploitation within the wild.

The vulnerabilities in query are listed under –

• CVE-2026-20122 (CVSS rating: 7.1) – An arbitrary file overwrite vulnerability that might enable an authenticated, distant attacker to overwrite arbitrary information on the native file system. Profitable exploitation requires the attacker to have legitimate read-only credentials with API entry on the affected system.
• CVE-2026-20128 (CVSS rating: 5.5) – An info disclosure vulnerability that might enable an authenticated, native attacker to achieve Information Assortment Agent (DCA) consumer privileges on an affected system. Profitable exploitation requires the attacker to have legitimate vManage credentials on the affected system.

Patches for the safety defects, together with CVE-2026-20126, CVE-2026-20129, and CVE-2026-20133, had been launched by Cisco late final month within the following variations –

• Sooner than Model 20.91 – Migrate to a hard and fast launch.
• Model 20.9 – Mounted in 20.9.8.2
• Model 20.11 – Mounted in 20.12.6.1
• Model 20.12 – Mounted in 20.12.5.3 and 20.12.6.1
• Model 20.13 – Mounted in 20.15.4.2
• Model 20.14 – Mounted in 20.15.4.2
• Model 20.15 – Mounted in 20.15.4.2
• Model 20.16 – Mounted in 20.18.2.1
• Model 20.18 – Mounted in 20.18.2.1

“In March 2026, the Cisco PSIRT grew to become conscious of energetic exploitation of the vulnerabilities which are described in CVE-2026-20128 and CVE-2026-20122 solely,” the networking tools main stated. The corporate didn’t elaborate on the size of the exercise and who could also be behind it.

In gentle of energetic exploitation, customers are advisable to replace to a hard and fast software program launch as quickly as attainable, and take steps to restrict entry from unsecured networks, safe the home equipment behind a firewall, disable HTTP for the Catalyst SD-WAN Supervisor internet UI administrator portal, flip off community companies like HTTP and FTP if not required, change the default administrator password, and monitor log visitors for any surprising visitors to and from methods.

The disclosure comes per week after the corporate stated a crucial safety flaw in Cisco Catalyst SD-WAN Controller and Catalyst SD-WAN Supervisor (CVE-2026-20127, CVSS rating: 10.0) has been exploited by a extremely refined cyber risk actor tracked as UAT-8616 to determine persistent footholds into high-value organizations.

This week, Cisco additionally launched updates to handle two maximum-severity safety vulnerabilities in Safe Firewall Administration Middle (CVE-2026-20079 and CVE-2026-20131, CVSS scores: 10.0) that might enable an unauthenticated, distant attacker to bypass authentication and execute arbitrary Java code as root on an affected machine.