SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-34748

A vulnerability in the web-based management interface of Cisco Intersight Virtual Appliance could allow an authenticated, remote attacker to perform a command injection attack on an affected device.

HIGH 8.8EPSS 2.75%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (2.75%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A vulnerability in the web-based management interface of Cisco Intersight Virtual Appliance could allow an authenticated, remote attacker to perform a command injection attack on an affected device. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by using the web-based management interface to execute a command using crafted input. A successful exploit could allow the attacker to execute arbitrary commands using root-level privileges on an affected device.

CVSS 3.1
8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
2.75% probability · 86th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-77, CWE-78
Affected
cisco/intersight virtual appliance
Source
psirt@cisco.com
EPSS trend
0%3%5%26 October 2026: 2.75%26 October 202626 October 2026

EPSS 2.7% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.