CVE-2023-20016

What it is

A vulnerability in the backup configuration feature of Cisco UCS Manager Software and in the configuration export feature of Cisco FXOS Software could allow an unauthenticated attacker with access to a backup file to decrypt sensitive information stored in the full state and configuration backup files. This vulnerability is due to a weakness in the encryption method used for the backup function. An attacker could exploit this vulnerability by leveraging a static key used for the backup configuration feature. A successful exploit could allow the attacker to decrypt sensitive information that is stored in full state and configuration backup files, such as local user credentials, authentication server passwords, Simple Network Management Protocol (SNMP) community names, and other credentials.

At a glance

Exploitability

Can be exploited locally on the machine without logging in, but needs a user to act. High risk of data exposure.

Exploit odds

0.1% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2023-02-23 20:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 05:29 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.1% in the next 30 days (EPSS).
• Severity: 6.3 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2023-02-23 20:15 UTC

Last modified

2026-06-17 05:29 UTC

Exploit probability

0.1% · EPSS, next 30 days

Weakness

CWE-321

Record status

Modified

Affected

• Cisco Ucs Central Software < 4.2\(3c\)
• Cisco Ucs 6536 Firmware
• Cisco Ucs 64108 Firmware
• Cisco Ucs 6454 Firmware
• Cisco Ucs 6200 Firmware
• Cisco Ucs 6248up Firmware
• Cisco Ucs 6296up Firmware
• Cisco Ucs 6300 Firmware

Attack profile CVSS 3.1 · 6.3

Attack vector

Local

Complexity

Low

Privileges needed

None

User interaction

Required

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2023-20016.md and follow it. Check whether this project is affected by CVE-2023-20016. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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