CVE-2025-6733Public exploitNetwork attack vector

Authenticated memory corruption via GroupName buffer overflow

Published Jun 26, 2025 · Updated Jun 27, 2025

Buffer overflow in the HiPER 840G API through 3.1.1-190328 allows remote authenticated users to corrupt memory via GroupName. The sub_416928 handler behind /goform/formConfigDnsFilterGlobal copies an oversized GroupName value without enforcing the destination buffer's bounds. A valid management session is required; the public proof of concept demonstrates the oversized request, but it does not document whether exploitation causes a crash or code execution.

CVSS severity8.8
High
EPSS probability0.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in the HiPER 840G API through 3.1.1-190328 allows remote authenticated users to corrupt memory via GroupName. The sub_416928 handler behind /goform/formConfigDnsFilterGlobal copies an oversized GroupName value without enforcing the destination buffer's bounds. A valid management session is required; the public proof of concept demonstrates the oversized request, but it does not document whether exploitation causes a crash or code execution.

The record

CVE
CVE-2025-6733
Published
Jun 26, 2025
Updated
Jun 27, 2025
Vendor
Shanghai Aitai Technology Co., Ltd.
Product
HiPER 840G
Classifications
CWE-119, CWE-120, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 27, 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=3.1.1-190328

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shanghai Aitai Technology Co., Ltd. · HiPER 840Gversion=3.1.1-190328

Published CVSS scores

7.4VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C
8.8VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.

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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-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1190Exploit Public-Facing Application

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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