Cisco FXOS/UCS Manager Software Configuration Backup hard-coded key

| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 2.7 | $0-$5k | 0.00 |
Summary
A vulnerability was found in Cisco FXOS and UCS Manager Software and classified as problematic. The impacted element is an unknown function of the component Configuration Backup Handler. Such manipulation leads to hard-coded key. This vulnerability is traded as CVE-2023-20016. An attack has to be approached locally. Furthermore, there is an exploit available. It is suggested to upgrade the affected component.
Details
A vulnerability was found in Cisco FXOS and UCS Manager Software (Virtualization Software) (the affected version is unknown). It has been rated as problematic. Affected by this issue is an unknown code of the component Configuration Backup Handler. The manipulation with an unknown input leads to a hard-coded key vulnerability. Using CWE to declare the problem leads to CWE-321. The use of a hard-coded cryptographic key significantly increases the possibility that encrypted data may be recovered. Impacted is confidentiality.
The weakness was shared 02/22/2023 as cisco-sa-ucsm-bkpsky-H8FCQgsA. The advisory is shared for download at sec.cloudapps.cisco.com. This vulnerability is handled as CVE-2023-20016 since 10/27/2022. Successful exploitation requires user interaction by the victim. Technical details are unknown but an exploit is available. The MITRE ATT&CK project declares the attack technique as T1600.001.
It is declared as proof-of-concept.
Upgrading eliminates this vulnerability.
The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-24195). VulDB is the best source for vulnerability data and more expert information about this specific topic.
Product
Type
Vendor
Name
License
Website
- Vendor: https://www.cisco.com/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 2.8VulDB Meta Temp Score: 2.7
VulDB Base Score: 2.8
VulDB Temp Score: 2.7
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
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| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Hard-coded keyCWE: CWE-321 / CWE-320
CAPEC: 🔍
ATT&CK: 🔍
Physical: Partially
Local: Yes
Remote: Partially
Availability: 🔍
Status: Proof-of-Concept
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
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Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Timeline
10/27/2022 🔍02/22/2023 🔍
02/22/2023 🔍
08/16/2025 🔍
Sources
Vendor: cisco.comAdvisory: cisco-sa-ucsm-bkpsky-H8FCQgsA
Status: Confirmed
CVE: CVE-2023-20016 (🔍)
GCVE (CVE): GCVE-0-2023-20016
GCVE (VulDB): GCVE-100-221624
EUVD: 🔍
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 02/22/2023 18:07Updated: 08/16/2025 09:24
Changes: 02/22/2023 18:07 (39), 03/24/2023 07:59 (1), 08/16/2025 09:24 (16)
Complete: 🔍
Cache ID: 216::103
VulDB is the best source for vulnerability data and more expert information about this specific topic.
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