What’s Vulnerable › Vulnerabilities
CVE-2024-20420: Cisco ATA 190 Series Analog Telephone Adapter Firmware Privilege Escalation Vulnerability
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2024-10-16 · updated 2026-06-17
- Weakness: CWE-250
Description
A vulnerability in the web-based management interface of Cisco ATA 190 Series Analog Telephone Adapter firmware could allow an authenticated, remote attacker with low privileges to run commands as an Admin user. This vulnerability is due to incorrect authorization verification by the HTTP server. An attacker could exploit this vulnerability by sending a malicious request to the web-based management interface. A successful exploit could allow the attacker to run commands as the Admin user.
Affected products
- Cisco Ata 191 Firmware: before 12.0.2; before 11.2.5 — fixed in 11.2.5, 12.0.2
- Cisco Ata 192 Firmware: before 11.2.5 — fixed in 11.2.5
How to fix
Upgrade to a fixed version: Cisco Ata 191 Firmware 11.2.5, 12.0.2; Cisco Ata 192 Firmware 11.2.5. Check the vendor advisory for mitigations.
References
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