TI-2025-39334 Aliases CVE-2025-63461 GHSA-h69g-qfwq-m8hr

Totolink A7000R v9.1.0u.6115_B20201022 was discovered to contain a stack overflow via the…

HIGH 72CWE-121Published 2025-10-31 · Updated 2025-11-03

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

Totolink A7000R v9.1.0u.6115_B20201022 was discovered to contain a stack overflow via the ssid5g parameter in the urldecode function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00413 35th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Partial

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:totolink:a7000r_firmware:9.1.0u.6115_b20201022:::::::*	9.1.0u.6115_b20201022	Vulnerable	TOTOLINK
cpe:2.3:h:totolink:a7000r:-:::::::*	not specified by NVD	Running on	TOTOLINK

cpe:2.3:o:totolink:a7000r_firmware:9.1.0u.6115_b20201022:*:*:*:*:*:*:* Versions 9.1.0u.6115_b20201022 Vulnerable ·TOTOLINK
cpe:2.3:h:totolink:a7000r:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-63461
2026-10-03 Alias added: GHSA-h69g-qfwq-m8hr

References

Exploit 1

https://github.com/0-fool/VulnbyCola/blob/main/TOTOLINK/A7000/7/1.md

TI-2024-18932 Buffer Overflow vulnerability in TOTOLink X5000R V9.1.0u.6118-B20201102 and A7000R… CVSS 3.1CRITICAL 9.8
TI-2023-26994 TOTOLink A7000R V9.1.0u.6115_B20201022 has a stack overflow vulnerability via setOpModeCfg. CVSS 3.1CRITICAL 9.8
TI-2024-06678 TOTOLINK A7000R cstecgi.cgi setWizardCfg buffer overflow CVSS 4.0HIGH 8.7
TI-2024-06677 TOTOLINK A7000R cstecgi.cgi loginauth buffer overflow CVSS 4.0HIGH 8.7
TI-2025-39335 Totolink A7000R v9.1.0u.6115_B20201022 was discovered to contain a stack overflow via the… CVSS 3.1HIGH 7.5
TI-2025-39333 Totolink A7000R v9.1.0u.6115_B20201022 was discovered to contain a stack overflow via the… CVSS 3.1HIGH 7.5

See all 34 →

Sources

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