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CVE-2026-20245

HIGHCVSS 7.8/10Actively ExploitedEPSS 9.92%

Last modified

CVE-2026-20245 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A vulnerability in the CLI of Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, and Cisco Catalyst SD-WAN Validator, formerly SD-WAN vBond, could allow an authenticated, local attacker to execute arbitrary commands as root by supplying a crafted file to the affected system. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by uploading a crafted file to the affected system. CISA has confirmed active exploitation in the wild. EPSS estimates a 9.92% chance of exploitation in the next 30 days.

Description

A vulnerability in the CLI of Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, and Cisco Catalyst SD-WAN Validator, formerly SD-WAN vBond, could allow an authenticated, local attacker to execute arbitrary commands as root by supplying a crafted file to the affected system. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by uploading a crafted file to the affected system. A successful exploit could allow the attacker to perform command injection attacks on an affected system and elevate their privileges as the root user.  To exploit this vulnerability, the attacker must have netadmin privileges on the affected system. This would require valid credentials or exploitation of or . Cisco is not aware of successful exploitation by other methods. Cisco has observed limited cases where the exploitation of this bug resulted in a configuration change pushed to edge devices. Cisco recommends that customers upgrade to the fixed software that is documented in the that was published on May 14, 2026, and verify the configuration of the edge devices.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
9.92%

95.0th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoCatalyst Sd-Wan Manager< 20.9.9.1
CiscoCatalyst Sd-Wan Manager>= 20.10, < 20.12.5.4
CiscoCatalyst Sd-Wan Manager>= 20.12.6, < 20.12.6.2
CiscoCatalyst Sd-Wan Manager>= 20.13, < 20.15.4.4
CiscoCatalyst Sd-Wan Manager>= 20.15.5, < 20.15.5.2
CiscoCatalyst Sd-Wan Manager>= 20.16, < 20.18.2.2
CiscoCatalyst Sd-Wan Manager>= 26.1, < 26.1.1.1
CiscoCatalyst Sd-Wan Manager20.12.7
CiscoSd-Wan Vsmart Controller< 20.9.9.1
CiscoSd-Wan Vsmart Controller>= 20.10, < 20.12.5.4
CiscoSd-Wan Vsmart Controller>= 20.12.6, < 20.12.6.2
CiscoSd-Wan Vsmart Controller>= 20.13, < 20.15.4.4
CiscoSd-Wan Vsmart Controller>= 20.15.5, < 20.15.5.2
CiscoSd-Wan Vsmart Controller>= 20.16, < 20.18.2.2
CiscoSd-Wan Vsmart Controller>= 26.1, < 26.1.1.1
CiscoSd-Wan Vsmart Controller20.12.7

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-20245?
A vulnerability in the CLI of Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, and Cisco Catalyst SD-WAN Validator, formerly SD-WAN vBond, could allow an authenticated, local attacker to execute arbitrary commands as root by supplying a crafted file to the affected system. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by uploading a crafted file to the affected system. A successful exploit could allow the attacker to perform command injection attacks on an affected system and elevate their privileges as the root user.&nbsp; To exploit this vulnerability, the attacker must have netadmin privileges on the affected system. This would require valid credentials or exploitation of or . Cisco is not aware of successful exploitation by other methods. Cisco has observed limited cases where the exploitation of this bug resulted in a configuration change pushed to edge devices. Cisco recommends that customers upgrade to the fixed software that is documented in the that was published on May 14, 2026, and verify the configuration of the edge devices.
How severe is CVE-2026-20245?
CVE-2026-20245 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 9.92% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.
How do I fix CVE-2026-20245?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-20245?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST