CVE-2025-7117Public exploitNetwork attack vector

Router crash via unchecked addHostFilter copy

Published Jul 7, 2025 · Updated Jul 7, 2025

Buffer overflow in UTT HiPER 840G 3.1.1-190328 allows remote authenticated users to crash the router via a crafted addHostFilter value. The websWhiteList handler passes addHostFilter to strcpy without checking the destination buffer size, corrupting adjacent memory. An authenticated management session is required, and the published PoC demonstrates denial of service; Check Point also identifies arbitrary code execution as an impact.

CVSS severity8.7
High
EPSS probability0.85%
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 UTT HiPER 840G 3.1.1-190328 allows remote authenticated users to crash the router via a crafted addHostFilter value. The websWhiteList handler passes addHostFilter to strcpy without checking the destination buffer size, corrupting adjacent memory. An authenticated management session is required, and the published PoC demonstrates denial of service; Check Point also identifies arbitrary code execution as an impact.

The record

CVE
CVE-2025-7117
Published
Jul 7, 2025
Updated
Jul 7, 2025
Vendor
Shanghai Aitai Technology Co., Ltd.
Product
HiPER 840G
Classifications
CWE-120, CWE-119, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 7, 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
8.7VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
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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