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Ac7 Firmware CVE-2026-24426

MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2026-02-03 disclosure@vulncheck.com
XSS Tenda Ac7 Firmware
6.1
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
CWE-79
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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Impact

CVSS 6.1 (MEDIUM). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: Required.
Exploit ScenarioDerived

An attacker could exploit this vulnerability to compromise the affected system.
This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

The Tenda AC7 firmware web management interface fails to properly sanitize user input, enabling reflected cross-site scripting (XSS) attacks that can inject malicious scripts into a victim's browser. An unauthenticated attacker can exploit this vulnerability to steal session cookies, perform unauthorized actions, or redirect users to malicious sites. No patch is currently available for affected firmware versions V03.03.03.01_cn and earlier.

Earlier versions of this analysis (1)
v1 Mar 12, 2026 - 21:54 CVSS 6.1

Shenzhen Tenda AC7 firmware version V03.03.03.01_cn and prior contain an improper output encoding vulnerability in the web management interface. [CVSS 6.1 MEDIUM]

RemediationAI

Monitor vendor advisories for a patch. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

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Technical ContextAI · show details

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects the web management component of Ac7 Firmware. Shenzhen Tenda AC7 firmware version V03.03.03.01_cn and prior contain an improper output encoding vulnerability in the web management interface. User-supplied input is reflected in HTTP responses without adequate escaping, allowing injection of arbitrary HTML or JavaScript in a victim’s browser context.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 6.1 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

DescriptionCVE.org

Shenzhen Tenda AC7 firmware version V03.03.03.01_cn and prior contain an improper output encoding vulnerability in the web management interface. User-supplied input is reflected in HTTP responses without adequate escaping, allowing injection of arbitrary HTML or JavaScript in a victim’s browser context.

Executive ViewAI

Why It Matters

CVE-2026-24426 presents moderate security risk, a cross-site scripting vulnerability rated CVSS 6.1. Attackers could inject scripts to steal sessions or perform actions as authenticated users. Organizations should apply vendor updates when available and monitor for exploitation.

Business Impact: Low
Compensating Controls

Apply vendor patch. If patching is delayed: implement CSP headers, enable HttpOnly cookies, deploy WAF XSS rules.

Threat Intelligence Overview

EPSS Score
0.0%
Top 90% exploitable
Data Quality
3 sources
Confidence: Low
NVD CVE.org EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.0%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact
Low

Priority Score

30
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +30
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting MEDIUM

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

Affected Products (CPE)CVE.org

cpe:2.3:o:tenda:ac7_firmware:*:*:*:*:*:*:*:*

More in Ac7 Firmware

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CVE-2025-29137 CRITICAL POC
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Tenda AC7 V1.0 V15.03.06.44 found a buffer overflow caused by the timeZone parameter in the form_fast_setting_wifi_set f
CVE-2024-32301 CRITICAL POC
9.8 Apr 17

Tenda AC7V1.0 v15.03.06.44 firmware has a stack overflow vulnerability via the PPW parameter in the fromWizardHandle fun
CVE-2023-41562 CRITICAL POC
9.8 Aug 30

Tenda AC7 V1.0 V15.03.06.44, Tenda AC9 V3.0 V15.03.06.42_multi, and Tenda AC5 US_AC5V1.0RTL_V15.03.06.28 were discovered
CVE-2023-41559 CRITICAL POC
9.8 Aug 30

Tenda AC7 V1.0 V15.03.06.44, Tenda AC9 V3.0 V15.03.06.42_multi, and Tenda AC5 V1.0RTL_V15.03.06.28 were discovered to co
CVE-2023-41558 CRITICAL POC
9.8 Aug 30

Tenda AC7 V1.0 V15.03.06.44 was discovered to contain a stack overflow via parameter timeZone at url /goform/SetSysTimeC
CVE-2023-41557 CRITICAL POC
9.8 Aug 30

Tenda AC7 V1.0 V15.03.06.44 and Tenda AC5 V1.0RTL_V15.03.06.28 were discovered to contain a stack overflow via parameter
CVE-2023-41556 CRITICAL POC
9.8 Aug 30

Tenda AC7 V1.0 V15.03.06.44, Tenda AC9 V3.0 V15.03.06.42_multi, and Tenda AC5 V1.0RTL_V15.03.06.28 were discovered to co
CVE-2023-41555 CRITICAL POC
9.8 Aug 30

Tenda AC7 V1.0 V15.03.06.44 was discovered to contain a stack overflow via parameter security_5g at url /goform/WifiBasi
CVE-2023-41552 CRITICAL POC
9.8 Aug 30

Tenda AC7 V1.0 V15.03.06.44 and Tenda AC9 V3.0 V15.03.06.42_multi were discovered to contain a stack overflow via parame
CVE-2023-38937 CRITICAL POC
9.8 Aug 07

Tenda AC10 V1.0 V15.03.06.23, AC1206 V15.03.06.23, AC8 v4 V16.03.34.06, AC6 V2.0 V15.03.06.23, AC7 V1.0 V15.03.06.44, AC
CVE-2023-38936 CRITICAL POC
9.8 Aug 07

Tenda AC10 V1.0 V15.03.06.23, AC1206 V15.03.06.23, AC6 V2.0 V15.03.06.23, AC7 V1.0 V15.03.06.44, AC5 V1.0 V15.03.06.28,

CVE-2023-38933 CRITICAL POC
9.8 Aug 07

Tenda AC6 V2.0 V15.03.06.23, AC7 V1.0 V15.03.06.44, F1203 V2.0.1.6, AC5 V1.0 V15.03.06.28, FH1203 V2.0.1.6 and AC9 V3.0

Same weakness CWE-79 – Cross-site Scripting (XSS)

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CVE-2016-8581 MEDIUM POC
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CVE-2025-52367 MEDIUM POC
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CVE-2017-9248 CRITICAL POC
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CVE-2013-1710 CRITICAL POC
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CVE-2024-52875 HIGH POC
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References

Advisories & patches
REF https://www.tendacn.com/product/AC7 REF https://www.vulncheck.com/advisories/tenda-ac7-reflected-xss-via-web-interface-output-encoding

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