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Severity by source

Vendor (TPLink) PRIMARY
8.6 HIGH
CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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
vuln.today AI
8.0 HIGH

Adjacent vector and low privilege required per description and CVSS 4.0 source; scope unchanged as impact is contained to the vulnerable device with no lateral system compromise indicated.

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

Primary rating from Vendor (TPLink).

CVSS VectorVendor: TPLink

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

3
Analysis Generated
Aug 10, 2026 - 23:23 vuln.today
Patch available
Aug 10, 2026 - 23:04 EUVD
CVE Published
Aug 10, 2026 - 22:24 cve.org
HIGH 8.6

DescriptionCVE.org

In affected TP-Link Aginet devices, insufficient authorization validation allows authenticated low-privileged users to execute higher-privileged operations.

An attacker may perform administrative actions such as creating privileged accounts or modifying critical configuration settings.

AnalysisAI

Privilege escalation across more than 60 TP-Link Aginet mesh networking device models allows authenticated low-privileged users to invoke administrative operations - including creating privileged accounts and modifying critical configuration settings - by exploiting insufficient authorization validation (CWE-863). The flaw spans the HB, HX, EX, HC, EB, XX, VX, and XC device families in US, EU, BR, AU, CA, KR, DE, and RU regional variants, with specific vulnerable firmware builds documented per device in ENISA EUVD-2025-210674. No public exploit or active exploitation has been identified at time of analysis; a vendor-released patch is available at the TP-Link advisory.

Technical ContextAI

The vulnerability is rooted in CWE-863 (Incorrect Authorization), where the Aginet firmware fails to enforce privilege-level checks before processing privileged management operations. CPE data confirms the affected scope spans TP-Link's Aginet line - an ISP-grade family including home hubs (HB series), WiFi mesh nodes (HX series), range extenders (EX series), cable gateways (HC220-G5), broadband ONTs (EB, EB810v), fiber and DSL devices (XX, VX series), and VDSL gateways (XC220-G3v). The flaw likely resides in the device web management API or backend daemon, where session tokens are authenticated but not validated against the required privilege tier before dispatching privileged actions such as account provisioning or configuration writes. The CVSS 4.0 adjacent attack vector (AV:A) indicates the management plane is reachable only from the local network segment, consistent with typical home gateway and ISP CPE architectures.

RemediationAI

The primary remediation is to update device firmware to the fixed versions specified in the TP-Link advisory at https://www.tp-link.com/us/support/faq/5239/. Fixed firmware builds are device-specific: for example, HB810(US2) V1.0/1.6/2.0/2.6 is remediated at firmware 0.9.0 3.2.2 (Build 260717), HX510(EU1) V2.0 at 0.14.0 3.0.0 (Build 250822), EX220(EU1) V1.0/1.20 at 0.20.0 2.0.0 (Build 250305), and HX710(EU1) V1.0 at 0.5.0 3.1.10 (Build 260511) - the complete per-device fix matrix is in EUVD-2025-210674. Where immediate firmware updates are not feasible, administrators should restrict the device management interface to a dedicated management VLAN or trusted host allowlist, limiting lateral reachability from untrusted adjacent segments; note this requires compatible network infrastructure and may disrupt remote management workflows. Additionally, disabling low-privilege user accounts if they are not operationally required removes the privilege-escalation prerequisite entirely for those deployments.

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CVE-2025-30238 vulnerability details – vuln.today

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