November 14, 2026

CVE Watchtower

CVE-2020-3478Cisco Enterprise Nfv Infrastructure Software Improper Input Validation

NVDCVSS scored by psirt@cisco.com

Vulnerability Summary

A vulnerability in the REST API of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an authenticated, remote attacker to overwrite certain files that should be restricted on an affected device. The vulnerability is due to insufficient authorization enforcement on an affected system. An attacker could exploit this vulnerability by uploading a file using the REST API. A successful exploit could allow an attacker to overwrite and upload files, which could degrade the functionality of the affected system.
Severity Level
HIGH(8.1)
Published Date
Sep 4, 2020
Last Modified
Aug 24, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
1.21%Probability
Root Weakness (CWE)
CWE-20: Improper Input Validation β†—
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required.
CVSS v3.1 Base Metrics — Score 8.1 (HIGH)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Cisco Enterprise Nfv Infrastructure Software >= 3.5.1 and <= 4.1.2
Patched Versions
No patched version published yet
Until a fix ships, reduce exposure:
  • Restrict access to the affected service or interface to trusted networks.
  • Disable the affected feature if you do not need it.
  • Watch the vendor advisory for a firmware or software update.

What to do

Plan remediation soon. No exploitation is confirmed yet, but the severity is high.

  1. Check whether you run Cisco Enterprise Nfv Infrastructure Software and which version.
  2. No patched version is listed yet. Limit access to the affected service to trusted networks, and disable the feature if you can.
  3. Subscribe to the vendor advisory so you learn when a fix ships.

Timeline

  • Sep 4, 2020Published
  • Aug 24, 2026Record last modified

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

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External References

Data last checked: Nov 14, 2026 15:12 UTC