CVE-2026-19924Public exploitNetwork attack vector

Authentication bypass via query-string whitelist match

Published Aug 16, 2026 · Updated Aug 16, 2026

Authentication bypass in Tenda AC10 16.03.10.09_multi_TDE01 allows remote attackers to access protected endpoints via crafted URLs. In httpd, R7WebsSecurityHandler strips the query string for most checks but uses strstr on the raw URL for two whitelist entries, so appending a whitelisted static-file name in the query string returns pass before any credential verification. Reachability requires network access to the web interface, with WAN exposure only if remote management is enabled, and the bypass can expose configuration downloads, log downloads, and administrative goform handlers.

CVSS severity9.8
Critical
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Tenda AC10 16.03.10.09_multi_TDE01 allows remote attackers to access protected endpoints via crafted URLs. In httpd, R7WebsSecurityHandler strips the query string for most checks but uses strstr on the raw URL for two whitelist entries, so appending a whitelisted static-file name in the query string returns pass before any credential verification. Reachability requires network access to the web interface, with WAN exposure only if remote management is enabled, and the bypass can expose configuration downloads, log downloads, and administrative goform handlers.

The record

CVE
CVE-2026-19924
Published
Aug 16, 2026
Updated
Aug 16, 2026
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
AC10
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 16, 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=16.03.10.09_multi_TDE01

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · AC10version=16.03.10.09_multi_TDE01

Published CVSS scores

9.8VulDB CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.9VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
10.0VulDB CNAAV:N/AC:L/Au:N/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
T1190Exploit Public-Facing Application

Public exploit references

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Technologies

Your stack

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Your stack

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