CVEs / CVE-2026-20133
CVE-2026-20133: Cisco Catalyst SD-WAN Manager Exposure of Sensitive Information to an Unauthorized Actor Vulnerability
- Known exploited in the CISA KEV catalog since 20 Apr 2026
- high 7.5 CVSS 3.1 (NVD)
- EPSS 31.4% chance of exploitation in the next 30 days, higher than 98% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Cisco Catalyst SD-WAN Manager contains an exposure of sensitive information to an unauthorized actor vulnerability that could allow remote attackers to view sensitive information on affected systems.
Description
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Cisco Cisco Catalyst SD-WAN Manager | 17.2.6 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 17.2.7 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 17.2.8 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 17.2.9 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 17.2.10 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 17.2.4 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 17.2.5 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 18.3.1.1 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 18.3.3.1 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 18.3.3 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 18.3.4 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 18.3.5 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 18.3.7 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 18.3.8 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 18.3.6.1 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 18.3.1 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 18.3.0 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 18.4.0.1 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 18.4.3 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 18.4.302 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 18.4.303 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 18.4.4 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 18.4.5 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 18.4.0 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 18.4.1 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 18.4.6 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 19.2.0 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 19.2.097 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 19.2.099 | — |
| Cisco Cisco Catalyst SD-WAN Manager | 19.2.1 | — |
Exploitation
| In CISA KEV since | 20 Apr 2026 |
|---|---|
| Due date for US federal agencies | 23 Apr 2026 |
| Used in ransomware campaigns | Unknown |
| Required action | Please adhere to CISA’s guidelines to assess exposure and mitigate risks associated with Cisco SD-WAN devices as outlines in CISA’s Emergency Directive 26-03 (URL listed below in Notes) and CISA’s “Hunt & Hardening Guidance for Cisco SD-WAN Devices (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available. |
Severity
| CVSS 3.1 | 7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NScored by NVD |
|---|---|
| Weakness | CWE-200 |
References
- CVE-2026-20133 on NVD
- CVE-2026-20133 in the CISA KEV catalog
- https://www.cisa.gov/news-events/directives/ed-26-03-mitigate-vulnerabilities-cisco-sd-wan-systems (cited by CISA)
- https://www.cisa.gov/news-events/directives/supplemental-direction-ed-26-03-hunt-and-hardening-guidance-cisco-sd-wan-systems (cited by CISA)
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4v (cited by CISA)
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4v Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20133 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.