CVE-2020-27131

HIGH

Cisco Security Manager < 4.22 - Unauthenticated Remote Code Execution via Java Deserialization

Title source: llm
STIX 2.1

Description

Multiple vulnerabilities in the Java deserialization function that is used by Cisco Security Manager could allow an unauthenticated, remote attacker to execute arbitrary commands on an affected device. These vulnerabilities are due to insecure deserialization of user-supplied content by the affected software. An attacker could exploit these vulnerabilities by sending a malicious serialized Java object to a specific listener on an affected system. A successful exploit could allow the attacker to execute arbitrary commands on the device with the privileges of NT AUTHORITY\SYSTEM on the Windows target host. Cisco has not released software updates that address these vulnerabilities.

References (1)

Core 1
Core References

Scores

CVSS v3 8.1
EPSS 0.8849
EPSS Percentile 99.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-502 CWE-20
Status published
Products (1)
cisco/security_manager < 4.22
Published Nov 17, 2020
Tracked Since Feb 18, 2026