HOMEVULNERABILITIESCVE-2021-37145
HIGH

CVE-2021-37145

CWE-77Published: September 7, 2021· Updated: Jun 17, 2026

7.2
CVSS v3.1

Official Description

A command-injection vulnerability in an authenticated Telnet connection in Poly (formerly Polycom) CX5500 and CX5100 1.3.5 leads an attacker to Privilege Escalation and Remote Code Execution capability. NOTE: This vulnerability only affects products that are no longer supported by the maintainer

NVD Source

Technical Analysis

CVE-2021-37145 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.2.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

poly4 product(s)
cx5500 firmwarecx5500cx5100 firmwarecx5100
Source: NVD CPE · 4 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://support.polycom.com/content/dam/polycom-support/global/documentation/security-bulletin-cx5100-cx5500-authenticated-v1-0.pdf
ADVISORYhttps://support.polycom.com/content/support.html
ADVISORYhttps://support.polycom.com/content/dam/polycom-support/global/documentation/security-bulletin-cx5100-cx5500-authenticated-v1-0.pdf
ADVISORYhttps://support.polycom.com/content/support.html

All References (4)

→
https://support.polycom.com/content/dam/polycom-support/global/documentation/security-bulletin-cx5100-cx5500-authenticated-v1-0.pdfVendor Advisory
→
https://support.polycom.com/content/support.htmlVendor Advisory
→
https://support.polycom.com/content/dam/polycom-support/global/documentation/security-bulletin-cx5100-cx5500-authenticated-v1-0.pdfVendor Advisory
→
https://support.polycom.com/content/support.htmlVendor Advisory

Quick Facts

CVE IDCVE-2021-37145
CVSS Score7.2 / 10
SeverityHIGH
WeaknessCWE-77
CISA KEVNo
Affected1 vendor(s)
PublishedSep 7, 2021

Related CVEs (CWE-77)

CVE-2014-9188
10.0
CVE-2015-7541
10.0
CVE-2024-32766
10.0
CVE-2013-2810
10.0
CVE-2024-48841
10.0
CVE-2017-7722
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-37145 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2021-37145·NVD