Cisco Packaged Contact Center Enterprise deserialization

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.
9.8$0-$5k0.00

Summaryinfo

A vulnerability categorized as very critical has been discovered in Cisco Packaged Contact Center Enterprise, Unified Communications Manager, Unified Communications Manager IM & Presence Service, Unified Communications Manager Session Management Edition, Unified Contact Center Enterprise, Unified Contact Center Express, Unity Connection and Virtualized Voice Browser. The affected element is an unknown function. The manipulation results in an unknown weakness. This vulnerability is cataloged as CVE-2024-20253. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as very critical, was found in Cisco Packaged Contact Center Enterprise, Unified Communications Manager, Unified Communications Manager IM & Presence Service, Unified Communications Manager Session Management Edition, Unified Contact Center Enterprise, Unified Contact Center Express, Unity Connection and Virtualized Voice Browser (Unified Communication Software). CWE is classifying the issue as CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was shared 01/24/2024 as cisco-sa-cucm-rce-bWNzQcUm. The advisory is available at sec.cloudapps.cisco.com. This vulnerability is traded as CVE-2024-20253 since 11/08/2023. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 05/30/2025).

Upgrading eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.8

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 10.0
NVD Vector: 🔍

CNA Base Score: 9.9
CNA Vector (Cisco Systems, Inc.): 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/08/2023 🔍
01/24/2024 +77 days 🔍
01/24/2024 +0 days 🔍
05/30/2025 +491 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-cucm-rce-bWNzQcUm
Status: Confirmed

CVE: CVE-2024-20253 (🔍)
GCVE (CVE): GCVE-0-2024-20253
GCVE (VulDB): GCVE-100-251994

Entryinfo

Created: 01/24/2024 19:02
Updated: 05/30/2025 01:27
Changes: 01/24/2024 19:02 (36), 02/18/2024 08:47 (23), 05/30/2025 01:27 (16)
Complete: 🔍
Cache ID: 216::103

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