EUVD-2026-17954
GHSA-753x-3fmj-hv4q
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Lifecycle Timeline
3Description
A vulnerability in the web interface of Cisco Smart Software Manager On-Prem (SSM On-Prem) could allow an authenticated, remote attacker to elevate privileges on an affected system. This vulnerability is due to the improper transmission of sensitive user information. An attacker could exploit this vulnerability by sending a crafted message to an affected Cisco SSM On-Prem host and retrieving session credentials from subsequent status messages. A successful exploit could allow the attacker to elevate privileges on the affected system from low to administrative. To exploit this vulnerability, the attacker must have valid credentials for a user account with at least the role of System User. Note: This vulnerability exposes information only about users who logged in to the Cisco SSM On-Prem host using the web interface and who are currently logged in. SSH sessions are not affected.
Analysis
Privilege escalation in Cisco Smart Software Manager On-Prem (SSM On-Prem) web interface allows authenticated remote attackers with System User role to gain administrative access by intercepting session credentials from status messages. CVSS 7.3 (High severity) with network attack vector, low complexity, and requires low privileges plus user interaction. …
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Remediation
Within 24 hours: Inventory all Cisco SSM On-Prem deployments and identify System User accounts; restrict System User role assignments to essential personnel only and review recent access logs for suspicious activity. Within 7 days: Contact Cisco support for patch availability timeline and interim security guidance; implement network segmentation to limit SSM On-Prem web interface access to trusted administrative networks only. …
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External POC / Exploit Code
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