CVE-2020-3470: Cisco Integrated Management Controller Multiple Remote Code Execution Vulnerabilities

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-11-18 · updated 2026-06-17
Weakness: CWE-119

Description

Multiple vulnerabilities in the API subsystem of Cisco Integrated Management Controller (IMC) could allow an unauthenticated, remote attacker to execute arbitrary code with root privileges. The vulnerabilities are due to improper boundary checks for certain user-supplied input. An attacker could exploit these vulnerabilities by sending a crafted HTTP request to the API subsystem of an affected system. When this request is processed, an exploitable buffer overflow condition may occur. A successful exploit could allow the attacker to execute arbitrary code with root privileges on the underlying operating system (OS).

Affected products

Cisco Enterprise NFV Infrastructure Software: before 4.4.1 — fixed in 4.4.1
Cisco Integrated Management Controller (IMC) Supervisor: from 4.0\(1a\) through 4.0\(4l\); from 3.0\(1c\) through 3.0\(4q\); from 4.0\(1a\) through 4.0\(2l\); from 4.1\(1c\) through 4.1\(1f\); before 3.2.11.3; from 3.1 through 4.0\(4l\) — fixed in 3.2.11.3

How to fix

Upgrade to a fixed version: Cisco Enterprise NFV Infrastructure Software 4.4.1; Cisco Integrated Management Controller (IMC) Supervisor 3.2.11.3. Check the vendor advisory for mitigations.

References

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