TI-2025-37757 Aliases CVE-2025-60684 GHSA-wjgf-7c7g-5vwr

A stack buffer overflow vulnerability exists in the ToToLink LR1200GB…

MEDIUM 64CWE-121Published 2025-11-13 · Updated 2026-07-05

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

A stack buffer overflow vulnerability exists in the ToToLink LR1200GB (V9.1.0u.6619_B20230130) and NR1800X (V9.1.0u.6681_B20230703) Router firmware within the cstecgi.cgi binary (sub_42F32C function). The web interface reads the "lang" parameter and constructs Help URL strings using sprintf() into fixed-size stack buffers without proper length validation. Maliciously crafted input can overflow these buffers, potentially leading to arbitrary code execution or memory corruption, without requiring authentication.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00549 46th 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: No
Technical impact: Total

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 · 4

CPE	Versions	Role	Vendor
cpe:2.3:o:totolink:lr1200gb_firmware:9.1.0u.6619_b20230130:::::::*	9.1.0u.6619_b20230130	Vulnerable	TOTOLINK
cpe:2.3:h:totolink:lr1200gb:-:::::::*	not specified by NVD	Running on	TOTOLINK
cpe:2.3:o:totolink:nr1800x_firmware:9.1.0u.6681_b20230703:::::::*	9.1.0u.6681_b20230703	Vulnerable	TOTOLINK
cpe:2.3:h:totolink:nr1800x:-:::::::*	not specified by NVD	Running on	TOTOLINK

cpe:2.3:o:totolink:lr1200gb_firmware:9.1.0u.6619_b20230130:*:*:*:*:*:*:* Versions 9.1.0u.6619_b20230130 Vulnerable ·TOTOLINK
cpe:2.3:h:totolink:lr1200gb:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK
cpe:2.3:o:totolink:nr1800x_firmware:9.1.0u.6681_b20230703:*:*:*:*:*:*:* Versions 9.1.0u.6681_b20230703 Vulnerable ·TOTOLINK
cpe:2.3:h:totolink:nr1800x:-:*:*:*:*:*:*:* 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-2025-60684
2026-10-03 Alias added: GHSA-wjgf-7c7g-5vwr

References

Exploit 1

https://github.com/yifan20020708/SGTaint-0-day/blob/main/ToToLink/ToToLink-LR1200GB/CVE-2025-60684.md

Other 1

https://www.totolink.net/

TI-2023-25362 TOTOLINK LR1200GB V9.1.0u.6619_B20230130 was discovered to contain a stack overflow via… CVSS 3.1CRITICAL 9.8
TI-2024-00269 Totolink LR1200GB cstecgi.cgi setUssd os command injection CVSS 3.1CRITICAL 9.8
TI-2024-00536 Totolink LR1200GB cstecgi.cgi UploadCustomModule stack-based overflow CVSS 3.1CRITICAL 9.8
TI-2024-00533 Totolink LR1200GB cstecgi.cgi setTracerouteCfg stack-based overflow CVSS 3.1CRITICAL 9.8
TI-2024-00531 Totolink LR1200GB cstecgi.cgi setDiagnosisCfg stack-based overflow CVSS 3.1CRITICAL 9.8
TI-2024-00268 Totolink LR1200GB cstecgi.cgi setUploadSetting os command injection CVSS 3.1CRITICAL 9.8

See all 18 →

Sources

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