EUVD-2026-20542
GHSA-w4qp-mpq3-cw45
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessAuthenticate to TP-Link Archer AX53
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DeliveryUpload malicious configuration file
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ExploitParse crafted file in tmpServer
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ExecutionOverflow stack buffer
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ImpactExecute arbitrary code as root
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Stack buffer bounds checking
MITRE ATT&CK
1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Authenticated adjacent network attacker with high-privilege credentials must upload a specially crafted configuration file to TP-Link Archer AX53 v1.0 (before firmware 1.7.1 Build 20260213). Requires access to device configuration upload functionality via tmpServer module. |
| Impact | CVSS 7.3 reflects high confidentiality/integrity impact but requires adjacent network access and high privilege (authenticated). EPSS data unavailable for full trajectory assessment. Stack overflow in configuration parsing affects only AX53 v1.0; patch available from vendor. Risk is elevated for users in shared network environments but mitigated by authentication requirement and patch availability. |
| Exploit ScenarioDerived | Authenticated adjacent attacker uploads crafted configuration file to tmpServer module, triggering stack overflow. Overflow overwrites stack memory, achieving arbitrary code execution on the device. No public exploit identified at time of analysis. |
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Alert meAnalysisAIv1 – Apr 08, 2026
Stack-based buffer overflow in TP-Link Archer AX53 v1.0 tmpServer module enables authenticated adjacent attackers to execute arbitrary code via malicious configuration file. Exploitation triggers segmentation fault, permits device state modification, sensitive data exposure, and integrity compromise. Affects firmware versions before 1.7.1 Build 20260213. Requires high privileges and adjacent network access. No public exploit identified at time of analysis.
RemediationAI
Vendor-released patch: firmware version 1.7.1 Build 20260213 or later. Immediately upgrade via official TP-Link firmware downloads at https://www.tp-link.com/en/support/download/archer-ax53/v1/#Firmware or https://www.tp-link.com/my/support/download/archer-ax53/v1/#Firmware. Verify firmware integrity using vendor-provided checksums before installation. Interim mitigations: restrict administrative access to trusted adjacent networks only, enforce strong authentication credentials, disable remote management interfaces. Monitor device logs for unexpected crashes or configuration anomalies. Consult TP-Link security advisory at https://www.tp-link.com/us/support/faq/5055/ for additional vendor guidance. No workaround eliminates vulnerability; patching is mandatory for production environments.
Affected VersionsENISA
Affects your stack
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Technical ContextAI · show details
CWE-121 stack buffer overflow in tmpServer configuration parsing logic. Authenticated adjacent attacker (CVSS AV:A/PR:H) crafts malformed configuration file exceeding stack buffer boundaries. Overflow corrupts stack frame, enabling instruction pointer control for arbitrary code execution within device firmware context. High attack complexity (AC:H) suggests exploitation requires precise memory layout knowledge or timing conditions.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
CVSS:4.0/AV:A/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L
Primary rating from Vendor (TPLink) · only source for this CVE.
CVSS VectorVendor: TPLink
Lifecycle Timeline
2DescriptionCVE.org
A stack-based buffer overflow in the tmpServer module of TP-Link Archer AX53 v1.0 allows an authenticated adjacent attacker to trigger a segmentation fault and potentially execute arbitrary code via a specially crafted configuration file. Successful exploitation may cause a crash and could allow arbitrary code execution, enabling modification of device state, exposure of sensitive data, or further compromise of device integrity.
This issue affects AX53 v1.0: before 1.7.1 Build 20260213.
Executive ViewAI
TP-Link Archer AX53 wireless routers running firmware before version 1.7.1 Build 20260213 contain a stack-based buffer overflow in the tmpServer module that allows authenticated adjacent network users with administrative privileges to execute arbitrary code and compromise device integrity. Organizations deploying these devices should prioritize firmware updates to prevent unauthorized code execution that could enable lateral movement, data theft, or persistent network compromise.
Apply vendor patch. If immediate patching is not feasible: (1) restrict administrative access to the device web interface via network segmentation and access control lists; (2) implement network monitoring to detect unusual tmpServer process behavior or unexpected code execution attempts; (3) disable remote management features if not operationally required; (4) enforce regular password rotation for device administrative accounts to reduce risk of credential compromise by adjacent attackers.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Vulnrichment
VulDB
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.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.
A stack-based buffer overflow occurs when a program writes more data to a buffer located on the stack than it was allocated to hold.
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.
OS command injection in TP-Link Archer AX53 v1.0 dnsmasq module allows authenticated adjacent attackers to execute arbit
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External configuration control in TP-Link AX53 v1.0 OpenVPN module allows authenticated adjacent attackers to read arbit
External control of configuration in TP-Link Archer AX53 v1.0 OpenVPN module allows authenticated adjacent attackers wit
Exploit-DB