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
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Metasploit 1 module
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Cisco 7937G Denial-of-Service Reboot Attack
auxiliary/dos/cisco/cisco_7937g_dos_reboot
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Automated scanner template
A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.
- Cisco Unified IP Conference Station 7937G - Denial-of-Service http/cves/2020/CVE-2020-16139.yaml
Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.
References
- http://packetstormsecurity.com/files/158819/Cisco-7937G-Denial-Of-Service.html
- https://www.blacklanternsecurity.com/2020-08-07-Cisco-Unified-IP-Conference-Station-7937G/
- https://www.cisco.com/c/en/us/products/collateral/collaboration-endpoints/unified-ip-phone-7940g/end_of_life_notice_c51-729487.html