CVE-2020-27690

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-11-04 · updated 2026-06-17
Weakness: CWE-120

Description

The Relish (Verve Connect) VH510 device with firmware before 1.0.1.6L0516 contains a buffer overflow within its web management portal. When a POST request is sent to /boaform/admin/formDOMAINBLK with a large blkDomain value, the Boa server crashes.

Affected products

Imomobile Verve Connect Vh510 Firmware: before 1.0.1.6l0516 — fixed in 1.0.1.6l0516

How to fix

Upgrade to a fixed version: Imomobile Verve Connect Vh510 Firmware 1.0.1.6l0516. Check the vendor advisory for mitigations.

References

https://6point6.co.uk/insights/security-advisory-relish-4g-hub-vh510/
https://6point6.co.uk/wp-content/uploads/2020/10/Relish-4G-VH510-Hub-Full-Disclosure-v1.3.pdf
https://6point6.co.uk/insights/security-advisory-relish-4g-hub-vh510/
https://6point6.co.uk/wp-content/uploads/2020/10/Relish-4G-VH510-Hub-Full-Disclosure-v1.3.pdf

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