Vulnerability Monitor

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CVE-2021-34736


A vulnerability in the web-based management interface of Cisco Integrated Management Controller (IMC) Software could allow an unauthenticated, remote attacker to cause the web-based management interface to unexpectedly restart. The vulnerability is due to insufficient input validation on the web-based management interface. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to cause the interface to restart, resulting in a denial of service (DoS) condition.


Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.3, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and limited availability for affected systems. Impacting 23 products from cisco, from cisco, from cisco and 20 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

2021-10-21T03:15:06.890

Last Modified

2024-11-21T06:11:04.973

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.3 (MEDIUM)

CVSSv2 Vector

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

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

10.0

Impact Score

2.9

Weaknesses
  • Type: Secondary
    CWE-20
  • Type: Primary
    CWE-20

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application cisco unified_computing_system < 4.1\(2g\) Yes
Application cisco unified_computing_system < 4.2\(1b\) Yes
Hardware cisco ucs_c125_m5 - No
Hardware cisco ucs_c22_m3 - No
Hardware cisco ucs_c220_m3 - No
Hardware cisco ucs_c220_m4 - No
Hardware cisco ucs_c220_m5 - No
Hardware cisco ucs_c225_m6 - No
Hardware cisco ucs_c24_m3 - No
Hardware cisco ucs_c240_m3 - No
Hardware cisco ucs_c240_m5 - No
Hardware cisco ucs_c240_sd_m5 - No
Hardware cisco ucs_c245_m6 - No
Hardware cisco ucs_c260_m2 - No
Hardware cisco ucs_c3160 - No
Hardware cisco ucs_c3260 - No
Hardware cisco ucs_c420_m3 - No
Hardware cisco ucs_c4200 - No
Hardware cisco ucs_c460_m2 - No
Hardware cisco ucs_c460_m4 - No
Hardware cisco ucs_c480_m5 - No
Hardware cisco ucs_c480_ml_m5 - No
Hardware cisco ucs_c890_m5 - No
Application cisco unified_computing_system < 4.1\(3e\) Yes
Hardware cisco ucs_s3260 - 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.