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Tenda AC18 EUVD-2026-35092

| CVE-2026-11528 HIGH
Stack-based Buffer Overflow (CWE-121)
2026-06-08 VulDB GHSA-g4hg-4wjv-mfcm
7.4
CVSS 4.0
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CVSS VectorNVD

CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

5
Analysis Updated
Jun 08, 2026 - 16:28 vuln.today
v3 (cvss_changed)
Analysis Updated
Jun 08, 2026 - 16:28 vuln.today
v2 (cvss_changed)
Re-analysis Queued
Jun 08, 2026 - 16:22 vuln.today
cvss_changed
CVSS changed
Jun 08, 2026 - 16:22 NVD
8.8 (HIGH) 7.4 (HIGH)
Analysis Generated
Jun 08, 2026 - 16:18 vuln.today

DescriptionNVD

A vulnerability was found in Tenda AC18 15.03.05.05. The affected element is the function sub_45304 of the file /goform/getRebootStatus of the component Web Management Interface. The manipulation of the argument callback results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been made public and could be used.

AnalysisAI

Stack-based buffer overflow in the Tenda AC18 router (firmware 15.03.05.05) Web Management Interface allows remote attackers with low privileges to corrupt memory by manipulating the callback argument sent to /goform/getRebootStatus. The flaw, handled by the sub_45304 function, has publicly available exploit code and enables high impact to confidentiality, integrity, and availability of the device. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Identify exposed Tenda AC18 admin panel
Delivery
Obtain or reuse low-privileged credentials
Exploit
Send crafted HTTP request to /goform/getRebootStatus
Execution
Overflow stack buffer in sub_45304 via callback param
Persist
Hijack saved return address
Impact
Execute shellcode as root on router

Vulnerability AssessmentAI

Exploitation Attacker requires network reachability to the Tenda AC18's Web Management Interface (HTTP) and low-privileged authenticated access per CVSS PR:L - typically valid login credentials to the router admin panel. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 4.0 vector AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/E:P scores 7.4 (High), reflecting network reachability, low attack complexity, no user interaction, and high CIA impact - but PR:L indicates some authentication is required, which limits exposure if the admin interface is not internet-facing or credentials are unique. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker who has obtained low-privileged credentials (or accesses an internet-exposed admin interface with weak credentials) sends a crafted HTTP request to /goform/getRebootStatus with an overlong callback parameter value. The oversized input overflows the stack buffer inside sub_45304, overwriting the saved return address and redirecting execution to attacker-supplied shellcode, achieving code execution as the router's web service (typically root on embedded MIPS/ARM Linux). …
Remediation No vendor-released patch identified at time of analysis - Tenda has not published an advisory or fixed firmware version in the available references. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Identify and inventory all Tenda AC18 routers in use, specifically noting which devices run firmware 15.03.05.05 and have internet-accessible web management interfaces. …

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EUVD-2026-35092 vulnerability details – vuln.today

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