A vulnerability classified as problematic has been found in Huawei EG8141A5, EG8145V5 and EG8145V5-V2 (affected version unknown). This affects an unknown functionality. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. This is going to have an impact on integrity. The summary by CVE is:

Huawei EG8141A5 devices through V5R019C00S100, EG8145V5 devices through V5R019C00S100, and EG8145V5-V2 devices through V5R021C00S184 allow the Epuser account to disable ONT firewall functionality, e.g., to remove the default blocking of the SSH and TELNET TCP ports, aka HWNO-56Q3.

It is possible to read the advisory at youtube.com. This vulnerability is uniquely identified as CVE-2025-49599 since 06/06/2025. The exploitability is told to be easy. The attack can only be done within the local network. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 06/07/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-17329). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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• Huawei

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• EG8141A5
• EG8145V5
• EG8145V5-V2

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• commercial

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