Cisco ThousandEyes Enterprise Agent Arbitrary File Overwrite Vulnerability

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Summary

CVECVE-2026-20161
StatePUBLISHED
Assignercisco
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-15 17:17:03 UTC
Updated2026-04-15 17:17:03 UTC
DescriptionA vulnerability in the CLI of Cisco ThousandEyes Enterprise Agent could allow an authenticated, local attacker with low privileges to overwrite arbitrary files on the local system of an affected device. This vulnerability is due to improper access controls on files that are on the local file system of an affected device. An attacker could exploit this vulnerability by placing a symbolic link in a specific location on the local file system. A successful exploit could allow the attacker to bypass file system permissions and overwrite arbitrary files on the affected device.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

Problem Types: CWE-59 | CWE-59 Improper Link Resolution Before File Access ('Link Following')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
3.1CNACVSSV3_15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Cisco Cisco ThousandEyes Enterprise Agent affected Agent 5.0 Not specified
CNA Cisco Cisco ThousandEyes Enterprise Agent affected Agent 4.4.4 Not specified
CNA Cisco Cisco ThousandEyes Enterprise Agent affected Agent 4.4.3 Not specified
CNA Cisco Cisco ThousandEyes Enterprise Agent affected Agent 4.4.2 Not specified
CNA Cisco Cisco ThousandEyes Enterprise Agent affected Agent 4.2 Not specified
CNA Cisco Cisco ThousandEyes Enterprise Agent affected Agent 4.1 Not specified
CNA Cisco Cisco ThousandEyes Enterprise Agent affected Agent 4.0 Not specified
CNA Cisco Cisco ThousandEyes Enterprise Agent affected Agent 5.1 Not specified
CNA Cisco Cisco ThousandEyes Enterprise Agent affected Agent 5.1.2 Not specified

References

ReferenceSourceLinkTags
sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-te-age... [email protected] sec.cloudapps.cisco.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Exploits

CNA: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

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