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Path traversal in Totolink A3002MU file upload handler

Priority MEDIUM 57CWE-22Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Totolink A3002MU from 1.0.0-B20230403.1455 is affected. The filename argument of the /boafrm/formUploadFile handler is not limited to a restricted directory (CWE-22), so a remote attacker can use path traversal to reach files outside it. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

A vulnerability was detected in Totolink A3002MU 1.0.0-B20230403.1455. This impacts the function sub_44B250 of the file /boafrm/formUploadFile of the component File Upload Handler. The manipulation of the argument filename results in path traversal. The attack can be executed remotely. The exploit is now public and may be used.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00354 29th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
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
TOTOLINKA3002MU1.0.0-B20230403.1455—No fix listedCNA
  • A3002MU VendorTOTOLINK Affected 1.0.0-B20230403.1455 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:totolink:a3002mu:*:*:*:*:*:*:*:*——TOTOLINK
  • cpe:2.3:a:totolink:a3002mu:*:*:*:*:*:*:*:* Versions — — ·TOTOLINK

Remediation

The sources list no fixed version for Totolink A3002MU.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-05 Threatist record created from CVE-2026-105286
  2. 2026-10-05 Alias added: GHSA-hmhp-7248-f7fj
  3. 2026-10-07 CISA SSVC decision points changed
  4. 2026-10-07 Priority changed: LOW → MEDIUM

References

  • TI-2023-25090 An issue in TOTOLINK A3700R v.9.1.2u.6165_20211012 allows a remote attacker to execute… CVSS 3.1CRITICAL 9.8
  • TI-2026-80926 TOTOLINK A950RG stack-based overflow in infostat.cgi via CONTENT_LENGTH CVSS 4.0CRITICAL 10.0
  • TI-2026-79142 Command injection in TOTOLINK A950RG UploadCustomModule function CVSS 4.0CRITICAL 10.0
  • TI-2026-79031 TOTOLINK EX200 setWiFiAclAddConfig stack-based buffer overflow CVSS 4.0CRITICAL 10.0
  • TI-2026-79012 Stack-based buffer overflow in TOTOLINK EX200 setStaticDhcpConfig CVSS 4.0CRITICAL 10.0
  • TI-2026-67719 Stack-based overflow in Totolink A3002MU QoS rule handler CVSS 4.0CRITICAL 10.0
See all 1317 →

Sources