CVE-2026-3814Public exploitNetwork attack vector

Authenticated service interruption via unbounded tempName copy

Published Mar 9, 2026 · Updated Mar 9, 2026

Stack-based buffer overflow in UTT HiPER 810G 1.7.7-1711 allows remote authenticated users to interrupt service via a crafted tempName. The getOneApConfTempEntry handler passes the attacker-controlled form value to strcpy without checking the destination stack buffer's size. Administrative Digest credentials are required, and the published proof of concept does not demonstrate code execution.

CVSS severity8.8
High
EPSS probability0.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in UTT HiPER 810G 1.7.7-1711 allows remote authenticated users to interrupt service via a crafted tempName. The getOneApConfTempEntry handler passes the attacker-controlled form value to strcpy without checking the destination stack buffer's size. Administrative Digest credentials are required, and the published proof of concept does not demonstrate code execution.

The record

CVE
CVE-2026-3814
Published
Mar 9, 2026
Updated
Mar 9, 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 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 9, 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=1.7.7-1711

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shanghai Aitai Technology Co., Ltd. · HiPER 810Gversion=1.7.7-1711

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
8.8VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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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