CVE-2025-4997Network attack vector

Authenticated service interruption via mishandled POST parameter

Published May 20, 2025 · Updated May 20, 2025

Denial of service in H3C Magic R2+ProG Router 200R004 allows remote authenticated users to interrupt service via a crafted POST request. The /goform/aspForm handler mishandles the param argument across ten named configuration functions; public sources do not disclose the resource-lifecycle failure. Low-privileged web-interface access is required, and successful exploitation interrupts device availability without reported data exposure or modification.

CVSS severity6.5
Medium
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in H3C Magic R2+ProG Router 200R004 allows remote authenticated users to interrupt service via a crafted POST request. The /goform/aspForm handler mishandles the param argument across ten named configuration functions; public sources do not disclose the resource-lifecycle failure. Low-privileged web-interface access is required, and successful exploitation interrupts device availability without reported data exposure or modification.

The record

CVE
CVE-2025-4997
Published
May 20, 2025
Updated
May 20, 2025
Vendor
New H3C Technologies Co., Ltd.
Product
H3C Magic R2+ProG Router
Classifications
CWE-404, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 20, 2025CVE publishedPublication date reported by the CVE source.
  2. May 20, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=200R004

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

New H3C Technologies Co., Ltd. · H3C Magic R2+ProG Routerversion=200R004

Published CVSS scores

7.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
6.8VulDBAV:N/AC:L/Au:S/C:N/I:N/A:C
6.5VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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