CVE-2026-19792Public exploitNetwork attack vector

Authenticated memory corruption via unbounded port-mapping formatting

Published Aug 14, 2026 · Updated Aug 14, 2026

Buffer overflow in the Tenda G0 20260625 web interface allows remote authenticated users to corrupt memory through a port-mapping request. The setPortMapping handler formats three attacker-controlled strings with sprintf into a 256-byte stack buffer without validating their combined length. Low-privileged web-management access is required; the evidence establishes stack corruption but not code execution.

CVSS severity8.8
High
EPSS probability0.47%
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 Tenda G0 20260625 web interface allows remote authenticated users to corrupt memory through a port-mapping request. The setPortMapping handler formats three attacker-controlled strings with sprintf into a 256-byte stack buffer without validating their combined length. Low-privileged web-management access is required; the evidence establishes stack corruption but not code execution.

The record

CVE
CVE-2026-19792
Published
Aug 14, 2026
Updated
Aug 14, 2026
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
G0
Classifications
CWE-119, CWE-120, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 14, 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=20260625

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · G0version=20260625

Published CVSS scores

8.8VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0VulDB CNAAV:N/AC:L/Au:S/C:C/I:C/A:C
7.4VulDB CNACVSS: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

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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