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CVE-2024-20450

Cisco Spa 301 Firmware remote code execution

9.8 CRITICALEPSS 7.22%
  1. Published7 Aug 2024

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 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Cisco Spa 301 Firmwareall versions
Cisco Spa 303 Firmwareall versions
Cisco Spa 501g Firmwareall versions
Cisco Spa 502g Firmwareall versions
Cisco Spa 504g Firmwareall versions
Cisco Spa 508g Firmwareall versions
Cisco Spa 509g Firmwareall versions
Cisco Spa 512g Firmwareall versions
Cisco Spa 514g Firmwareall versions
Cisco Spa 525g2 Firmwareall versions
Cisco Spa 525g Firmwareall versions

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

Frequently asked

Is CVE-2024-20450 being actively exploited?

CVE-2024-20450 is not in the CISA KEV catalog. Its EPSS exploit probability is 7.22%.

How severe is CVE-2024-20450?

CVE-2024-20450 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 7.22% probability of exploitation.

Which products are affected by CVE-2024-20450?

Affected products include Cisco Spa 301 Firmware, Cisco Spa 303 Firmware, Cisco Spa 501g Firmware, Cisco Spa 502g Firmware, Cisco Spa 504g Firmware, and 6 more.

How do I fix CVE-2024-20450?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-20450 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.