Vulnerability Monitor

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CVE-2021-34711


A vulnerability in the debug shell of Cisco IP Phone software could allow an authenticated, local attacker to read any file on the device file system. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by providing crafted input to a debug shell command. A successful exploit could allow the attacker to read any file on the device file system.


Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.5, requiring local system access to exploit with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), for affected systems. Impacting 32 products from cisco, from cisco, from cisco and 29 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2021-10-06T20:15:09.587

Last Modified

2024-11-21T06:11:01.283

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.5 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:P/I:N/A:N

  • Access Vector: LOCAL
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: NONE
  • Availability Impact: NONE
Exploitability Score

3.9

Impact Score

2.9

Weaknesses
  • Type: Secondary
    CWE-36
  • Type: Primary
    CWE-22

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco ip_conference_phone_7832_firmware < 14.1\(1\) Yes
Hardware cisco ip_conference_phone_7832 - No
Operating System cisco ip_conference_phone_8832_firmware < 14.1\(1\) Yes
Hardware cisco ip_conference_phone_8832 - No
Operating System cisco ip_phone_7811_firmware < 14.1\(1\) Yes
Hardware cisco ip_phone_7811 - No
Operating System cisco ip_phone_7821_firmware < 14.1\(1\) Yes
Hardware cisco ip_phone_7821 - No
Operating System cisco ip_phone_7832_firmware < 14.1\(1\) Yes
Hardware cisco ip_phone_7832 - No
Operating System cisco ip_phone_7841_firmware < 14.1\(1\) Yes
Hardware cisco ip_phone_7841 - No
Operating System cisco ip_phone_7861_firmware < 14.1\(1\) Yes
Hardware cisco ip_phone_7861 - No
Operating System cisco ip_phone_8811_firmware < 14.1\(1\) Yes
Hardware cisco ip_phone_8811 - No
Operating System cisco ip_phone_8831_firmware < 14.1\(1\) Yes
Hardware cisco ip_phone_8831 - No
Operating System cisco ip_phones_8832_firmware < 14.1\(1\) Yes
Hardware cisco ip_phones_8832 - No
Operating System cisco ip_phone_8841_firmware < 14.1\(1\) Yes
Hardware cisco ip_phone_8841 - No
Operating System cisco ip_phone_8845_firmware < 14.1\(1\) Yes
Hardware cisco ip_phone_8845 - No
Operating System cisco ip_phone_8851_firmware < 14.1\(1\) Yes
Hardware cisco ip_phone_8851 - No
Operating System cisco ip_phone_8861_firmware < 14.1\(1\) Yes
Hardware cisco ip_phone_8861 - No
Operating System cisco ip_phone_8865_firmware < 14.1\(1\) Yes
Hardware cisco ip_phone_8865 - No
Operating System cisco wireless_ip_phone_8821_firmware < 11.0\(6\)sr2 Yes
Hardware cisco wireless_ip_phone_8821 - No

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.