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TI-2025-07445 Aliases CVE-2025-8139GHSA-862h-mghm-42j7

TOTOLINK A702R HTTP POST Request formPortFw buffer overflow

Priority HIGH 71CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

A vulnerability was found in TOTOLINK A702R 4.0.0-B20230721.1521. It has been classified as critical. This affects an unknown part of the file /boafrm/formPortFw of the component HTTP POST Request Handler. The manipulation of the argument service_type leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01232 69th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TOTOLINKA702R4.0.0-B20230721.1521—No fix listedCNA
  • A702R VendorTOTOLINK Affected 4.0.0-B20230721.1521 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:totolink:a702r_firmware:4.0.0-b20230721.1521:*:*:*:*:*:*:*4.0.0-b20230721.1521VulnerableTOTOLINK
cpe:2.3:h:totolink:a702r:-:*:*:*:*:*:*:*not specified by NVDRunning onTOTOLINK
  • cpe:2.3:o:totolink:a702r_firmware:4.0.0-b20230721.1521:*:*:*:*:*:*:* Versions 4.0.0-b20230721.1521 Vulnerable ·TOTOLINK
  • cpe:2.3:h:totolink:a702r:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-8139
  2. 2026-10-03 Alias added: GHSA-862h-mghm-42j7

References

Exploit 1

Other 1

  • TI-2025-08972 TOTOLINK A702R formParentControl sub_418030 buffer overflow CVSS 4.0HIGH 8.7
  • TI-2025-07446 TOTOLINK A702R HTTP POST Request formWlanMultipleAP buffer overflow CVSS 4.0HIGH 8.7
  • TI-2025-06310 TOTOLINK A702R HTTP POST Request formParentControl buffer overflow CVSS 4.0HIGH 8.7
  • TI-2025-06199 TOTOLINK A702R HTTP POST Request formWlSiteSurvey buffer overflow CVSS 4.0HIGH 8.7
  • TI-2025-05794 TOTOLINK A702R/A3002R/A3002RU/EX1200T HTTP POST Request formIPv6Addr buffer overflow CVSS 4.0HIGH 8.7
  • TI-2025-05557 TOTOLINK A702R HTTP POST Request formSysLog buffer overflow CVSS 4.0HIGH 8.7
See all 31 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences