# CVE-2026-20133

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.

- Page: https://www.vulneraibility.com/cve/CVE-2026-20133
- CVSS: 6.5
- Known exploited: yes, in CISA KEV since 2026-04-20; CISA due date 2026-04-23
- EPSS: 31.48%
- CISA SSVC: exploitation active, automatable no, technical impact partial (assessed 2026-04-22)
- Weakness: CWE-200
- Published: 2026-02-25

## Affected versions

- Cisco Cisco Catalyst SD-WAN Manager: affected 17.2.6; 17.2.7; 17.2.8; 17.2.9; 17.2.10; 17.2.4; 17.2.5; 18.3.1.1; 18.3.3.1; 18.3.3; 18.3.4; 18.3.5; 18.3.7; 18.3.8; 18.3.6.1; 18.3.1; 18.3.0; 18.4.0.1; 18.4.3; 18.4.302; 18.4.303; 18.4.4; 18.4.5; 18.4.0; 18.4.1; 18.4.6; 19.2.0; 19.2.097; 19.2.099; 19.2.1; 19.2.2; 19.2.3; 19.2.31; 19.2.929; 19.2.4; 20.1.1.1; 20.1.12; 20.1.1; 20.1.2; 20.1.3; 19.3.0; 19.1.0; 18.2.0; 20.3.1; 20.3.2; 20.3.2.1; 20.3.3; 20.3.3.1; 20.3.4; 20.3.4.1; 20.3.4.2; 20.3.5; 20.3.6; 20.3.7; 20.3.7.1; 20.3.4.3; 20.3.5.1; 20.3.7.2; 20.3.8; 20.4.1; 20.4.1.1; 20.4.1.2; 20.4.2; 20.4.2.2; 20.4.2.1; 20.4.2.3; 20.5.1; 20.5.1.2; 20.5.1.1; 20.6.1; 20.6.1.1; 20.6.2.1; 20.6.2.2; 20.6.2; 20.6.3; 20.6.3.1; 20.6.4; 20.6.5; 20.6.5.1; 20.6.5.3; 20.6.1.2; 20.6.3.2; 20.6.4.1; 20.6.5.2; 20.6.5.4; 20.6.3.3; 20.6.4.2; 20.6.3.0.45; 20.6.3.0.46; 20.6.3.0.47; 20.6.3.4; 20.6.4.0.21; 20.6.5.1.10; 20.6.5.1.11; 20.6.5.1.7; 20.6.5.1.9; 20.6.5.2.4; 20.6.5.5; 20.6.5.2.8; 20.6.5.1.13; 20.6.6; 20.6.7; 20.6.8; 20.7.1; 20.7.1.1; 20.7.2; 20.8.1; 20.9.1; 20.9.2; 20.9.2.1; 20.9.3; 20.9.3.1; 20.9.2.3; 20.9.3.0.12; 20.9.3.0.16; 20.9.3.0.17; 20.9.3.0.18; 20.9.3.0.20; 20.9.3.0.21; 20.9.3.2; 20.9.3.2_LI_Images; 20.9.4; 20.9.4_LI_Images; 20.9.3.0.23; 20.9.4.1; 20.9.5; 20.9.5.1; 20.9.5.2; 20.9.6; 20.9.5.3; 20.9.7; 20.9.7.1; 20.9.8; 20.10.1; 20.10.1.1; 20.10.1.2; 20.11.1; 20.11.1.1; 20.11.1.2; 20.12.1; 20.12.1_LI_Images; 20.12.2; 20.12.3; 20.12.3.1; 20.12.4; 20.12.4.1; 20.12.5; 20.12.5.1; 20.12.5.2; 20.12.6; 20.13.1; 20.14.1; 20.15.1; 20.15.2; 20.15.3; 20.15.3.1; 20.15.4; 20.15.4.1; 20.16.1; 20.18.1; 20.18.2

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4v
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20133

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.