CVE-2026-27511Network attack vector

Unauthorized configuration changes via frameable admin pages

Published Feb 23, 2026 · Updated Feb 23, 2026

Clickjacking in Shenzhen Tenda F3 firmware 12.01.01.55_multi allows remote attackers to alter router settings via a crafted site. The web interface omits X-Frame-Options, so an attacker-controlled page can frame administrative content and conceal the actions presented. Exploitation requires an authenticated administrator to visit the crafted page and interact with the disguised controls; the reported consequence is unauthorized configuration changes.

CVSS severity5.1
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Clickjacking in Shenzhen Tenda F3 firmware 12.01.01.55_multi allows remote attackers to alter router settings via a crafted site. The web interface omits X-Frame-Options, so an attacker-controlled page can frame administrative content and conceal the actions presented. Exploitation requires an authenticated administrator to visit the crafted page and interact with the disguised controls; the reported consequence is unauthorized configuration changes.

The record

CVE
CVE-2026-27511
Published
Feb 23, 2026
Updated
Feb 23, 2026
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
F3
Classifications
CWE-1021
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 23, 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=0 <=12.01.01.55_multi

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · F3version=0 <=12.01.01.55_multi

Published CVSS scores

5.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
4.3VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-1021Improper Restriction of Rendered UI Layers or Frames

Public exploit references

No public exploit references are available in this record.

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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