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AEGLIX vulnerability intelligence

CVE-2020-3161

CRITICAL · CVSS 9.8 · Analyzed

Published: 2020-04-15 · Updated: 2026-06-17 · Source: NVD

Vulnerability overview

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.

Severity and scoring

CVSS score
9.8 · CRITICAL
CVSS version
3.1
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-20

CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.

Known exploitation and remediation

Listed in CISA’s Known Exploited Vulnerabilities catalog.

Affected product
Cisco · Cisco IP Phones
Added to catalog
2021-11-03
Required action
Apply updates per vendor instructions.
CISA remediation due date
2022-05-03

CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.

Verify affected versions and patch availability in the vendor advisory before making changes.

Affected products and versions

  • cpe:2.3:o:cisco:ip_phone_8865_firmware:10.3\(1\)es14:*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8865_firmware:11.0\(1\):*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8865_firmware:11.0\(5\)sr1:*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8851_firmware:10.3\(1\)es14:*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8851_firmware:11.0\(1\):*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8851_firmware:11.0\(5\)sr1:*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_7841_firmware:11.0\(1\):*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_7821_firmware:11.0\(1\):*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8811_firmware:10.3\(1\)es14:*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8811_firmware:11.0\(1\):*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8811_firmware:11.0\(5\)sr1:*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8861_firmware:10.3\(1\)es14:*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8861_firmware:11.0\(1\):*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8861_firmware:11.0\(5\)sr1:*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8845_firmware:10.3\(1\)es14:*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8845_firmware:11.0\(1\):*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8845_firmware:11.0\(5\)sr1:*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_7861_firmware:11.0\(1\):*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8841_firmware:10.3\(1\)es14:*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8841_firmware:11.0\(1\):*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8841_firmware:11.0\(5\)sr1:*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_7811_firmware:11.0\(1\):*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8821_firmware:10.3\(1\)es14:*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0\(1\):*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0\(5\)sr1:*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8821-ex_firmware:10.3\(1\)es14:*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8821-ex_firmware:11.0\(1\):*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:ip_phone_8821-ex_firmware:11.0\(5\)sr1:*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:8831_firmware:10.3\(1\)es14:*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:8831_firmware:11.0\(1\):*:*:*:*:*:*:*

  • cpe:2.3:o:cisco:8831_firmware:11.0\(5\)sr1:*:*:*:*:*:*:*

These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.

Advisories and references

Explore official sources

Read the official NVD record ↗

Explore the CISA catalog ↗

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