What’s Vulnerable › Vulnerabilities

CVE-2024-20451

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-08-07 · updated 2026-06-17
• Weakness: 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 cause an affected device to reload unexpectedly. These vulnerabilities exist because HTTP packets are not properly checked for errors. An attacker could exploit this vulnerability by sending a crafted HTTP packet to the remote interface of an affected device. A successful exploit could allow the attacker to cause a DoS condition on the device.

Affected products

• Cisco Spa 301 Firmware: all versions
• Cisco Spa 303 Firmware: all versions
• Cisco Spa 501G Firmware: all versions
• Cisco Spa 502G Firmware: all versions
• Cisco Spa 504G Firmware: all versions
• Cisco Spa 508G Firmware: all versions
• Cisco Spa 509G Firmware: all versions
• Cisco Spa 512G Firmware: all versions
• Cisco Spa 514G Firmware: all versions
• Cisco Spa 525G2 Firmware: all versions
• Cisco Spa 525G Firmware: all versions

References

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

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