CVE-2024-20451
Multiple vulnerabilities in the web-based management interface of Cisco Small Business SPA300 Series IP Phones and Cisco Small Business…
- Published
- Updated
- Reserved
- Assigned by
- cisco
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.
Timeline
ID reserved
By cisco
- 9 months later
· 9 months later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ciscoCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Analyzed | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.75% · top 45% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
Cisco · Cisco Small Business IP Phones
- affected 7.6.0
- affected 7.6.2
- affected 7.6.2SR3
- affected 7.6.2SR6
- affected 7.6.2SR2
- affected 7.6.2SR4
- affected 7.6.2SR1
- affected 7.6.2SR5
- affected 7.6.2SR7
- affected 7.6.1
- affected 7.3.7
- affected 7.5.5
- affected 7.5.6(XU)
- affected 7.5.2
- affected 7.5.2a
- affected 7.5.7
- affected 7.5.3
- affected 7.5.6
- affected 7.5.2b
- affected 7.5.6c
- affected 7.5.6a
- affected 7.5.7s
- affected 7.5.1
- affected 7.5.5a
- affected 7.5.5b
- affected 7.5.4
- affected 7.4.7
- affected 7.4.4
- affected 7.4.8
- affected 7.4.3
- affected 7.4.9
- affected 7.4.6
- affected 1.0.17
What to do
Exploitation: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.
References (1)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2024-20451)Record last updated .