CVE-2026-4318Public exploitNetwork attack vector

Authenticated service interruption via unbounded parameter copy

Published Mar 17, 2026 · Updated Mar 17, 2026

Buffer overflow in UTT HiPER 810G 1.7.7-171114 and earlier allows remote authenticated users to interrupt gateway service via a crafted request. In /goform/formApLbConfig, the add action copies the loadBalanceNameOld value into a fixed destination without enforcing its length. A router management session is required; an oversized value corrupts process memory and can interrupt gateway service.

CVSS severity8.8
High
EPSS probability0.50%
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 810G 1.7.7-171114 and earlier allows remote authenticated users to interrupt gateway service via a crafted request. In /goform/formApLbConfig, the add action copies the loadBalanceNameOld value into a fixed destination without enforcing its length. A router management session is required; an oversized value corrupts process memory and can interrupt gateway service.

The record

CVE
CVE-2026-4318
Published
Mar 17, 2026
Updated
Mar 17, 2026
Vendor
Shanghai Aitai Technology Co., Ltd.
Product
HiPER 810G
Classifications
CWE-119, CWE-120, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 17, 2026Record 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=1.7.7-171114

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shanghai Aitai Technology Co., Ltd. · HiPER 810Gversion=1.7.7-171114

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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