High severity8.8NVD Advisory· Published Jul 17, 2020· Updated Jun 17, 2026

CVE-2020-5756

Description

Grandstream GWN7000 firmware version 1.0.9.4 and below allows authenticated remote users to modify the system's crontab via undocumented API. An attacker can use this functionality to execute arbitrary OS commands on the router.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Grandstream/Gwn7000 Firmware
cpe:2.3:o:grandstream:gwn7000_firmware:*:*:*:*:*:*:*:*
Range: <=1.0.9.4
Grandstream/GWN7000llm-fuzzy
Range: <=1.0.9.4
Tenable/Grandstream GWN7000v5
Range: Versions 1.0.9.4 and below

Patches

Vulnerability mechanics

References

www.tenable.com/cve/CVE-2020-5756nvdExploitThird Party Advisory
www.tenable.com/security/research/tra-2020-41nvdNot Applicable

News mentions

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cvss	0.572
epss	0.002
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000