CVE-2024-20450

CRITICAL EPSS 93.5%
Published Aug 7, 20241y ago · Modified Jun 17, 20261w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Aug 7, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

Multiple vulnerabilities in the web-based management interface of Cisco Small Business SPA300 Series IP Phones and Cisco Small Business SPA500 Series IP Phones could allow an unauthenticated, remote attacker to execute arbitrary commands on the underlying operating system with root privileges. These vulnerabilities exist because incoming HTTP packets are not properly checked for errors, which could result in a buffer overflow. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to overflow an internal buffer and execute arbitrary commands at the root privilege level.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
93.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-120

Affected Products 22

VendorProductVersionRange
ciscospa_301_firmware*any
ciscospa_301_1_line_ip_phone*any
ciscospa_303_firmware*any
ciscospa_303_3_line_ip_phone*any
ciscospa_501g_firmware*any
ciscospa_501g_8-line_ip_phone*any
ciscospa_502g_firmware*any
ciscospa_502g_1-line_ip_phone*any
ciscospa_504g_firmware*any
ciscospa_504g_4-line_ip_phone*any
ciscospa_508g_firmware*any
ciscospa_508g_8-line_ip_phone*any
ciscospa_509g_firmware*any
ciscospa_509g_12-line_ip_phone*any
ciscospa_512g_firmware*any
ciscospa_512g_1-line_ip_phone*any
ciscospa_514g_firmware*any
ciscospa_514g_4-line_ip_phone*any
ciscospa_525g_firmware*any
ciscospa_525g_5-line_ip_phone*any
ciscospa_525g2_firmware*any
ciscospa_525g2_5-line_ip_phone*any

References 1

  • sec.cloudapps.cisco.com https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-spa-http-vulns-RJZmX2Xz
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.