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CVE-2026-20133

Cisco Catalyst SD-WAN Manager Exposure of Sensitive Information to an Unauthorized Actor

6.5 MEDIUMActively exploited (CISA KEV)EPSS 31.8%
  1. Published25 Feb 2026
  2. Added to CISA KEV20 Apr 2026
  3. Remediation due23 Apr 2026
Actively exploited (CISA KEV)

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.

Added to KEV: 20 Apr 2026Federal remediation due: 23 Apr 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

Cisco Catalyst SD-WAN Manager≥ 20.10 < 20.12.5.3 · ≥ 20.13 < 20.15.4.2 · ≥ 20.16 < 20.18.2.1 · < 20.9.8.2

Remediation

Fixed in
Cisco Catalyst SD-WAN Manager≥ 20.12.5.3

References

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Frequently asked

Is CVE-2026-20133 being actively exploited?

Yes. CVE-2026-20133 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 20 Apr 2026.

How severe is CVE-2026-20133?

CVE-2026-20133 has a CVSS 3.1 base score of 6.5, rated medium. EPSS estimates a 31.8% probability of exploitation.

Which products are affected by CVE-2026-20133?

Affected products include Cisco Catalyst SD-WAN Manager.

How do I fix CVE-2026-20133?

Upgrade affected software to a fixed version, for example Cisco Catalyst SD-WAN Manager 20.12.5.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-20133 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.