CVE-2024-20450

CRITICAL
Published Aug 7, 2024 Modified Aug 23, 2024 CWE-120

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.

Is your site exposed to CVE-2024-20450?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-120 CWE-120

Affected Products

Vendor Product
cisco spa_301_firmware
cisco spa_301_1_line_ip_phone
cisco spa_303_firmware
cisco spa_303_3_line_ip_phone
cisco spa_501g_firmware
cisco spa_501g_8-line_ip_phone
cisco spa_502g_firmware
cisco spa_502g_1-line_ip_phone
cisco spa_504g_firmware
cisco spa_504g_4-line_ip_phone
cisco spa_508g_firmware
cisco spa_508g_8-line_ip_phone
cisco spa_509g_firmware
cisco spa_509g_12-line_ip_phone
cisco spa_512g_firmware
cisco spa_512g_1-line_ip_phone
cisco spa_514g_firmware
cisco spa_514g_4-line_ip_phone
cisco spa_525g_firmware
cisco spa_525g_5-line_ip_phone
cisco spa_525g2_firmware
cisco spa_525g2_5-line_ip_phone

References

Frequently Asked Questions

What is CVE-2024-20450? +
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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2024-20450? +
CVE-2024-20450 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.
What products are affected by CVE-2024-20450? +
CVE-2024-20450 affects products from cisco, specifically: spa_301_1_line_ip_phone, spa_301_firmware, spa_303_3_line_ip_phone, spa_303_firmware, spa_501g_8-line_ip_phone, spa_501g_firmware, spa_502g_1-line_ip_phone, spa_502g_firmware, spa_504g_4-line_ip_phone, spa_504g_firmware, spa_508g_8-line_ip_phone, spa_508g_firmware, spa_509g_12-line_ip_phone, spa_509g_firmware, spa_512g_1-line_ip_phone, spa_512g_firmware, spa_514g_4-line_ip_phone, spa_514g_firmware, spa_525g2_5-line_ip_phone, spa_525g2_firmware, spa_525g_5-line_ip_phone, spa_525g_firmware. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-20450? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-27820

zlib is a Ruby interface for the zlib compression/decompression library. Versions 3.0.0 and below, 3.1.0, 3.1.1, 3.2.0 and 3.2.1 contain …
CVE-2024-13503

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in Newtec NTC2218, NTC2250, NTC2299 on Linux, PowerPC, ARM …
CVE-2024-6199

An unauthenticated attacker on the WAN interface, with the ability to intercept Dynamic DNS (DDNS) traffic between DDNS services and …
CVE-2024-6198

The device exposes a web interface on ports TCP/3030 and TCP/9882. This web service runs lighttpd, which implements the “SNORE” …
CVE-2025-6151

A vulnerability has been found in TP-Link TL-WR940N V4 and TL-WR841N V11. Affected by this issue is some unknown functionality …
CVE-2025-0045

Improper Input validation in the AMD Secure Processor (ASP) PCI driver may allow a local attacker to create a buffer …

Don't wait for an exploit

Scan your website for vulnerabilities like CVE-2024-20450 — free, no signup required.