Cisco ThousandEyes Endpoint Agent for Windows Arbitrary File Write Vulnerability
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
Multiple vulnerabilities in the update process of Cisco ThousandEyes Endpoint Agent for Windows could allow an authenticated, local attacker to delete arbitrary files on an affected device. These vulnerabilities are due to improper access controls on files that are in the local file system. An attacker could exploit these vulnerabilities by using a symbolic link to perform an agent upgrade that redirects the delete operation of any protected file. A successful exploit could allow the attacker to delete arbitrary files from the file system of the affected device.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cisco | Cisco ThousandEyes Endpoint Agent | N/A | — | No fix listed | CNA |
- Cisco ThousandEyes Endpoint Agent VendorCisco Affected N/A Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-20259
- 2026-10-03 Alias added: GHSA-cxp3-3gvr-5g69
References
Advisory 1
More Cisco Thousandeyes Endpoint Agent vulnerabilities
- TI-2025-14427 Cisco ThousandEyes Endpoint Agent Certificate Validation Vulnerability CVSS 3.1MEDIUM 4.8
Sources
- CVE-2025-20259 · CVE Program
- CVE-2025-20259 · NVD
- FIRST EPSS
- GHSA-cxp3-3gvr-5g69 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences