CVE-2022-39059: ChangingTec MegaServiSignAdapter - Path Traversal

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-01-31 · updated 2026-06-17
Weakness: CWE-22

Description

ChangingTech MegaServiSignAdapter component has a path traversal vulnerability within its file reading function. An unauthenticated remote attacker can exploit this vulnerability to access arbitrary system files.

Affected products

ChangingTec MegaServiSignAdapter: before 1.0.22.1004 — fixed in 1.0.22.1004

How to fix

Upgrade to a fixed version: ChangingTec MegaServiSignAdapter 1.0.22.1004. Check the vendor advisory for mitigations.

References

https://www.twcert.org.tw/tw/cp-132-6886-2c546-1.html
https://www.twcert.org.tw/tw/cp-132-6886-2c546-1.html

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