What is CVE-2021-37145?

CVE-2021-37145 is a high-severity vulnerability in Poly Cx5100, classified under Command Injection. CVSS score: 7.2/10. Published 2021-09-07.

How severe is CVE-2021-37145?

High severity. CVSS v3 base score is 7.2 out of 10.

Is CVE-2021-37145 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Poly Cx5100

CVE-2021-37145

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

Vulnerability class: Command Injection (OS Command Injection)

Published 2021-09-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.020 (80.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-77 — Command Injection

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

support.polycom.com/content/support.html (Vendor Advisory)
support.polycom.com/content/dam/polycom-support/global/documentation/security-b… (Vendor Advisory)

Frequently asked questions

What is CVE-2021-37145?: CVE-2021-37145 is a high-severity vulnerability in Poly Cx5100, classified under Command Injection. CVSS score: 7.2/10. Published 2021-09-07.
How severe is CVE-2021-37145?: High severity. CVSS v3 base score is 7.2 out of 10.
Is CVE-2021-37145 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.