CVE-2026-20133

EUVD-2026-8678
A vulnerability in Cisco Catalyst SD-WAN Software could allow an unauthenticated, remote attacker to view sensitive information on an affected system.

 This vulnerability is due to insufficient file system restrictions. An authenticated attacker with netadmin privileges could exploit this vulnerability by accessing the vshell of an affected system. A successful exploit could allow the attacker to read sensitive information on the underlying operating system.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.5 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 83%
Affected Products (NVD)
VendorProductVersion
ciscocatalyst_sd-wan_manager
𝑥
< 20.9.8.2
ciscocatalyst_sd-wan_manager
20.10 ≤
𝑥
< 20.12.5.3
ciscocatalyst_sd-wan_manager
20.13 ≤
𝑥
< 20.15.4.2
ciscocatalyst_sd-wan_manager
20.16 ≤
𝑥
< 20.18.2.1
ciscocatalyst_sd-wan_manager
20.12.6
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4v
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20133