What is the CVSS score of CVE-2025-6627?

CVE-2025-6627 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.4%.

Which versions of A702r Firmware are affected by CVE-2025-6627?

A critical buffer overflow vulnerability in TOTOLINK A702R routers allows remote attackers to execute arbitrary code without authentication, potentially compromising network infrastructure and all…

Is there a public PoC exploit available for CVE-2025-6627?

Yes, a public proof-of-concept exploit is available for CVE-2025-6627. Prioritise patching immediately. EPSS: 0.4%.

How to fix or mitigate CVE-2025-6627?

Within 24 hours: Identify all TOTOLINK A702R 4.0.0-B20230721.1521 devices in your network and isolate them from critical systems if possible; enable logging on affected devices. Within 7 days: Contact TOTOLINK for patch availability and timeline; implement network segmentation to restrict management access; disable IPv6 setup functionality if not required. Within 30 days: Deploy replacement hardware from alternative vendors or apply any available firmware updates; conduct network forensics to detect potential compromise.

A702r Firmware CVE-2025-6627

EUVD-2025-19135 HIGH

Buffer Overflow (CWE-119)

2025-06-25 cna@vuldb.com

Buffer Overflow TP-Link A702r Firmware TOTOLINK

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

EUVD ID Assigned

Mar 15, 2026 - 23:19 euvd

EUVD-2025-19135

Analysis Generated

Mar 15, 2026 - 23:19 vuln.today

PoC Detected

Jul 16, 2025 - 19:35 vuln.today

Public exploit code

CVE Published

Jun 25, 2025 - 19:15 nvd

HIGH 8.8

DescriptionCVE.org

A vulnerability has been found in TOTOLINK A702R 4.0.0-B20230721.1521 and classified as critical. This vulnerability affects unknown code of the file /boafrm/formIpv6Setup of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.