CVE-2025-4998Public exploitNetwork attack vector

Authenticated service interruption via unreleased handler resources

Published May 20, 2025 · Updated May 21, 2025

Denial of service in H3C Magic R200G 100R002 allows remote authenticated users to interrupt routing via a crafted HTTP POST. The affected /goform/aspForm handlers process attacker-controlled param values without properly releasing resources, eventually making the device unavailable. Low-privileged access to the web management interface is required, and the published impact is limited to service interruption.

CVSS severity7.1
High
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Denial of service in H3C Magic R200G 100R002 allows remote authenticated users to interrupt routing via a crafted HTTP POST. The affected /goform/aspForm handlers process attacker-controlled param values without properly releasing resources, eventually making the device unavailable. Low-privileged access to the web management interface is required, and the published impact is limited to service interruption.

The record

CVE
CVE-2025-4998
Published
May 20, 2025
Updated
May 21, 2025
Vendor
New H3C Technologies Co., Ltd.
Product
H3C Magic R200G
Classifications
CWE-404, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 20, 2025CVE publishedPublication date reported by the CVE source.
  2. May 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=100R002

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

New H3C Technologies Co., Ltd. · H3C Magic R200Gversion=100R002

Published CVSS scores

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
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
6.5VulDBCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

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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