Vulnerability · Published May 25, 2025 · Assigned by VulDB

CVE-2025-5156H3C GR-5400AX aspForm EditWlanMacList buffer overflow

High 8.8

In plain English

A high-severity buffer overflow in GR-5400AX from H3C. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.9%top 39.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was found in H3C GR-5400AX up to 100R008 and classified as critical. Affected by this issue is the function EditWlanMacList of the file /routing/goform/aspForm. The manipulation of the argument param leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
H3C	GR-5400AX	100R008

Weakness: CWE-120, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

VDB-310244 | H3C GR-5400AX aspForm EditWlanMacList buffer overflow vdb-entry, technical-description
VDB-310244 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #574080 | New H3C Technologies Co., Ltd. H3C GR-5400AX <=100R008 Buffer Overflow third-party-advisory
https://github.com/CH13hh/tmp_store_cc/blob/main/H3C%20GB5400AX/6.md exploit