CVE-2025-10756Public exploitNetwork attack vector

Authenticated router crash via unbounded tempName copy

Published Sep 20, 2025 · Updated Sep 22, 2025

Buffer overflow in UTT HiPER 840G 3.1.1-190328 and earlier allows remote authenticated users to crash the router via a crafted request. The getOneApConfTempEntry handler passes the attacker-controlled tempName value to strcpy without bounding the copy into its stack buffer. Access to the management interface and valid administrator digest credentials are required; the published proof of concept demonstrates a service crash, not code execution.

CVSS severity8.8
High
EPSS probability0.87%
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 and earlier allows remote authenticated users to crash the router via a crafted request. The getOneApConfTempEntry handler passes the attacker-controlled tempName value to strcpy without bounding the copy into its stack buffer. Access to the management interface and valid administrator digest credentials are required; the published proof of concept demonstrates a service crash, not code execution.

The record

CVE
CVE-2025-10756
Published
Sep 20, 2025
Updated
Sep 22, 2025
Vendor
Shanghai Aitai Technology Co., Ltd.
Product
HiPER 840G
Classifications
CWE-120, CWE-119, T1499.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 22, 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 privilegesadmin

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
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
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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
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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