CVE-2019-11355

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-03-12 · updated 2026-06-17
Weakness: CWE-78

Description

An issue was discovered in Poly (formerly Polycom) HDX 3.1.13. A feature exists that allows the creation of a server / client certificate, or the upload of the user certificate, on the administrator's page. The value received from the user is the factor value of a shell script on the equipment. By entering a special character (such as a single quote) in a CN or other CSR field, one can insert a command into a factor value. A system command can be executed as root.

Affected products

Polycom Hdx System Software: through 3.1.13

References

https://support.polycom.com/content/dam/polycom-support/global/documentation/hdx-3-1-14-advisory.pdf
https://support.polycom.com/content/dam/polycom-support/global/documentation/hdx-3-1-14-advisory.pdf

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