---
title: "CVE-2020-16139: A denial-of-service in Cisco Unified IP… | CubePath"
description: "A denial-of-service in Cisco Unified IP Conference Station 7937G 1-4-4-0 through 1-4-5-7 allows attackers restart the device remotely through sending…"
language: en
source: https://cubepath.com/security/cve/CVE-2020-16139
---

# CVE-2020-16139: A denial-of-service in Cisco Unified IP… | CubePath

## Description

A denial-of-service in Cisco Unified IP Conference Station 7937G 1-4-4-0 through 1-4-5-7 allows attackers restart the device remotely through sending specially crafted packets. Note: We cannot prove this vulnerability exists. Out of an abundance of caution, this CVE is being assigned to better serve our customers and ensure all who are still running this product understand that the product is end of life and should be removed or upgraded. For more information on this, and how to upgrade, refer to the CVE’s reference information

Official description from the CVE record, published by mitre. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2020-16139)

## Key data

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.79770 (79.8% probability)

Percentile

99.6%

Scores of

Nov 10, 2026

Model

v2026.06.15

### CISA assessment as of Jun 11, 2024

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.

Exploitation

Public proof of concept recorded by CISA

Automatable

yes

Technical impact

partial

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [packetstormsecurity.com/files/158819/Cisco-7937G-Denial-Of-…](http://packetstormsecurity.com/files/158819/Cisco-7937G-Denial-Of-Service.html)
- [blacklanternsecurity.com/2020-08-07-Cisco-Unified-IP-Confer…](https://www.blacklanternsecurity.com/2020-08-07-Cisco-Unified-IP-Conference-Station-7937G/)
- [cisco.com/c/en/us/products/collateral/collaboration-endpoin…](https://www.cisco.com/c/en/us/products/collateral/collaboration-endpoints/unified-ip-phone-7940g/end%5Fof%5Flife%5Fnotice%5Fc51-729487.html)

## Timeline

1. ID reserved Jul 29, 2020
2. Record published Aug 12, 2020
3. Record last updated Aug 4, 2024

## Look up another CVE

## About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.

[Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection)

Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:05 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)