VDB-231080 · CVE-2023-20105 · EUVD-2023-24284

Cisco Expressway/TelePresence Video Communication Server input validation

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.0	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as very critical has been found in Cisco Expressway and TelePresence Video Communication Server. This vulnerability affects unknown code. Such manipulation leads to an unknown weakness. This vulnerability is referenced as CVE-2023-20105. It is possible to launch the attack remotely. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Cisco Expressway and TelePresence Video Communication Server (Unified Communication Software) (the affected version unknown) and classified as very critical. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability.

The weakness was published 06/08/2023 as cisco-sa-expressway-priv-esc-Ls2B9t7b. The advisory is shared for download at sec.cloudapps.cisco.com. This vulnerability is handled as CVE-2023-20105 since 10/27/2022. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/23/2025).

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-24284). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Unified Communication Software

Vendor

Cisco

Name

License

commercial

Website

Vendor: https://www.cisco.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.2
VulDB Meta Temp Score: 9.0

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 9.6
CNA Vector (Cisco Systems, Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/27/2022 🔍
06/08/2023 +224 days 🔍
06/08/2023 +0 days 🔍
08/23/2025 +807 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-expressway-priv-esc-Ls2B9t7b
Status: Confirmed

CVE: CVE-2023-20105 (🔍)
GCVE (CVE): GCVE-0-2023-20105
GCVE (VulDB): GCVE-100-231080
EUVD: 🔍

Entryinfo

Created: 06/08/2023 09:36
Updated: 08/23/2025 02:10
Changes: 06/08/2023 09:36 (36), 07/07/2023 09:29 (1), 07/07/2023 09:31 (13), 08/23/2025 02:10 (16)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.