CVE-2025-5156
CVE-2025-5156 is a high-severity vulnerability in H3c Gr-5400ax Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 9.0
- CVSS v4: 8.7
- EPSS exploit prediction: 1% (49th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-16247
- Weakness: CWE-120
- Affected product: H3c Gr-5400ax Firmware
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2025-5156?
- 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.
- How severe is CVE-2025-5156?
- CVE-2025-5156 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2025-5156 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-5156?
- CVE-2025-5156 affects H3c Gr-5400ax Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-5156?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2025-5156 have an EU (EUVD) identifier?
- Yes. CVE-2025-5156 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16247.
- When was CVE-2025-5156 published?
- CVE-2025-5156 was published on 2025-05-25 and last updated on 2026-06-17.
References
- https://github.com/CH13hh/tmp_store_cc/blob/main/H3C%20GB5400AX/6.md
- https://vuldb.com/?ctiid.310244
- https://vuldb.com/?id.310244
- https://vuldb.com/?submit.574080
Affected products (1)
- cpe:2.3:o:h3c:gr-5400ax_firmware:*:*:*:*:*:*:*:*
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