Is CVE-2026-20126 actively exploited?

No active exploitation of CVE-2026-20126 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-20126 be exploited remotely?

Yes. CVE-2026-20126 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-20126?

CVE-2026-20126 has a CVSS score of 8.8 (HIGH) and an EPSS exploitation probability of 0.06%.

HOME VULNERABILITIESCVE-2026-20126

HIGH

CVE-2026-20126

CWE-648Published: February 25, 2026· Updated: Feb 27, 2026

8.8

CVSS v3.1

EPSS:0.06%probability of exploitation in 30 daysPercentile:19.3th

Official Description

A vulnerability in Cisco Catalyst SD-WAN Manager could allow an authenticated, local attacker with low privileges to gain root privileges on the underlying operating system.

This vulnerability is due to an insufficient user authentication mechanism in the REST API. An attacker could exploit this vulnerability by sending a request to the REST API of the affected system. A successful exploit could allow the attacker to gain root privileges on the underlying operating system.

NVD Source

Technical Analysis

CVE-2026-20126 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.