CVE-2020-3161 kev in the critical feed json
Cisco IP Phones Web Server Remote Code Execution and Denial of Service Vulnerability
published 2020-04-15 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-24432
- cvss
- 9.8
- version 3.0, CNA
- cisa kev
- Exploited
- added 2021-11-03
- epss
- 83.9%
- EPSS 83.9% chance of exploitation in 30 days, percentile 99.6%
- public exploits
- 1
- Exploit-DB
Summary
A vulnerability in the web server for Cisco IP Phones could allow an unauthenticated, remote attacker to execute code with root privileges or cause a reload of an affected IP phone, resulting in a denial of service (DoS) condition. The vulnerability is due to a lack of proper input validation of HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web server of a targeted device. A successful exploit could allow the attacker to remotely execute code with root privileges or cause a reload of an affected IP phone, resulting in a DoS condition.
Patch / fix
cisa required action Apply updates per vendor instructions.
Timeline
- Published
- First public exploit (EDB-48342)
- Added to CISA KEV
- CISA patch deadline
- CISA SSVC: exploitation active
Known exploited
- Added
- 5 y ago
- Patch by
- 2022-05-03 (4 y ago)
- Ransomware
- Not known
- Required action
- Apply updates per vendor instructions.
- Vendor, product
- Cisco, Cisco IP Phones
- CISA name
- Cisco IP Phones Web Server Remote Code Execution and Denial-of-Service Vulnerability
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- yes
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
83.86% chance of exploitation in the next 30 days, higher than 99.6% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-48342 Cisco IP Phone 11.7 - Denial of service (PoC) dos, 2020-04-17
- packetstormsecurity.com http://packetstormsecurity.com/files/157265/Cisco-IP-Phone-11.7-Denial-Of-Service.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Affected products
- Cisco Cisco IP phone
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
packetstormsecurity.com
/files/157265/Cisco-IP-Phone-11.7-Denial-Of-Service.html
exploit, third-party-advisory, vdb-entry
-
tools.cisco.com
/security/center/content/CiscoSecurityAdvisory/cisco-sa-voip-phones-rce-dos-rB6EeRXs
vendor-advisory
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3161
government-resource, us-government-resource
Sources
- CVE List CVE-2020-3161
- NVD CVE-2020-3161
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.