CVE-2026-76454
Received Received - Intake

Cisco License On-Prem API File Write and DoS Vulnerability

Publication date: 2026-10-07

Last updated on: 2026-10-07

Assigner: Cisco Systems, Inc.

Description
A vulnerability in the Cisco Smart Licensing Utility API of Cisco License On-Prem, formerly Cisco Smart Software Manager On-Prem (SSM On-Prem), could allow an unauthenticated, remote attacker to write arbitrary files to the system or cause a DoS condition on an affected application. This vulnerability is due to improper input validation and a lack of authentication in the management API. An attacker could exploit this vulnerability by sending a crafted request to the affected API. A successful exploit could allow the attacker to modify system files or cause a DoS condition.

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Meta Information

Published
2026-10-07
Last Modified
2026-10-07
Generated
2026-10-07
AI Q&A
2026-10-07
EPSS Evaluated
N/A
NVD
CVE-2026-76454
EUVD
EUVD-2026-94454

Affected Vendors & Products

Showing 36 associated CPEs
Vendor Product Version / Range
Cisco Cisco License On-Prem 7-202001
Cisco Cisco License On-Prem 1.1
Cisco Cisco License On-Prem 6.3.0
Cisco Cisco License On-Prem 8-202004
Cisco Cisco License On-Prem 8-202006
Cisco Cisco License On-Prem 1.2
Cisco Cisco License On-Prem 1.3
Cisco Cisco License On-Prem 8-202012
Cisco Cisco License On-Prem 8-202010
Cisco Cisco License On-Prem 8-202008
Cisco Cisco License On-Prem 9-202201
Cisco Cisco License On-Prem 8-202102
Cisco Cisco License On-Prem 1.4
Cisco Cisco License On-Prem 8-202105
Cisco Cisco License On-Prem 8-202108
Cisco Cisco License On-Prem 8-202112
Cisco Cisco License On-Prem 8-202201
Cisco Cisco License On-Prem 8-202206
Cisco Cisco License On-Prem 8-202212
Cisco Cisco License On-Prem 8-202302
Cisco Cisco License On-Prem 8-202303
Cisco Cisco License On-Prem 8-202304
Cisco Cisco License On-Prem 8-202308
Cisco Cisco License On-Prem 8-202401
Cisco Cisco License On-Prem 8-202404
Cisco Cisco License On-Prem 9-202406
Cisco Cisco License On-Prem 9-202407
Cisco Cisco License On-Prem 9-202410
Cisco Cisco License On-Prem 9-202412
Cisco Cisco License On-Prem 9-202501
Cisco Cisco License On-Prem 9-202502
Cisco Cisco License On-Prem 9-202504
Cisco Cisco License On-Prem 9-202507
Cisco Cisco License On-Prem 9-202510
Cisco Cisco License On-Prem 9-202601
Cisco Cisco License On-Prem 10-202606

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-23 The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory.

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Executive Summary

This vulnerability in Cisco Smart Licensing Utility API allows an unauthenticated remote attacker to write arbitrary files to the system or cause a denial of service (DoS) condition. It is due to improper input validation and lack of authentication in the management API.

Impact Analysis

An attacker could exploit this to modify system files or crash the affected application, leading to potential data loss, system unavailability, or unauthorized changes to the system.

Mitigation Strategies

Apply the latest security patches from Cisco for the Cisco Smart Licensing Utility API. Ensure proper input validation is implemented and enforce authentication for API access. Monitor network traffic for unusual requests targeting the affected API.

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