Improper input validation in Cisco 8831
CVE-2020-3161
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 vul…
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.837 (99.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Cisco 8831
- Cisco 8831_firmware — versions 10.3\(1\)es14, 11.0\(1\), 11.0\(5\)sr1
- Cisco Ip Phone — versions n/a
- Cisco Ip_phone_7811
- Cisco Ip_phone_7811_firmware — versions 11.0\(1\)
- Cisco Ip_phone_7821
- Cisco Ip_phone_7821_firmware — versions 11.0\(1\)
- Cisco Ip_phone_7841
- Cisco Ip_phone_7841_firmware — versions 11.0\(1\)
- Cisco Ip_phone_7861
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
- psirt@cisco.com (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2020-3161?
- CVE-2020-3161 is a critical-severity vulnerability in Cisco 8831, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2020-04-15.
- How severe is CVE-2020-3161?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-3161 known to be exploited?
- Yes. CVE-2020-3161 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 8 public proof-of-concept repositories are indexed.