TI-2025-37759 Aliases CVE-2025-60686 GHSA-5mqq-26vj-265q

A local stack-based buffer overflow vulnerability exists in the infostat.cgi and…

MEDIUM 58CWE-121Published 2025-11-13 · Updated 2026-07-05

Key facts

Attack vector: Local
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 local stack-based buffer overflow vulnerability exists in the infostat.cgi and cstecgi.cgi binaries of ToToLink routers (A720R V4.1.5cu.614_B20230630, LR1200GB V9.1.0u.6619_B20230130, and NR1800X V9.1.0u.6681_B20230703). Both programs parse the contents of /proc/net/arp using sscanf() with "%s" format specifiers into fixed-size stack buffers without length validation. Specifically, one function writes user-controlled data into a single-byte buffer, and the other into adjacent small arrays without bounds checking. An attacker who controls the contents of /proc/net/arp can trigger memory corruption, leading to denial of service or potential arbitrary code execution.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00238 14th 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 · 6

CPE	Versions	Role	Vendor
cpe:2.3:o:totolink:a720r_firmware:4.1.5cu.614_b20230630:::::::*	4.1.5cu.614_b20230630	Vulnerable	TOTOLINK
cpe:2.3:h:totolink:a720r:-:::::::*	not specified by NVD	Running on	TOTOLINK
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:a720r_firmware:4.1.5cu.614_b20230630:*:*:*:*:*:*:* Versions 4.1.5cu.614_b20230630 Vulnerable ·TOTOLINK
cpe:2.3:h:totolink:a720r:-:*:*:*:*:*:*:* Versions 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-2025-60686
2026-10-03 Alias added: GHSA-5mqq-26vj-265q

References

Exploit 1

https://github.com/yifan20020708/SGTaint-0-day/blob/main/ToToLink/ToToLink-A720R/CVE-2025-60686.md

Other 1

https://www.totolink.net/

TI-2025-08527 TOTOLINK A720R cstecgi.cgi setParentalRules buffer overflow CVSS 4.0HIGH 8.7
TI-2025-37756 A command injection vulnerability exists in the ToToLink A720R Router firmware… CVSS 3.1MEDIUM 6.5
TI-2025-37755 A command injection vulnerability exists in the ToToLink A720R Router firmware… CVSS 3.1MEDIUM 6.5
TI-2025-03802 TOTOLINK A720R cstecgi.cgi information disclosure CVSS 4.0MEDIUM 6.9
TI-2025-03801 TOTOLINK A720R Config cstecgi.cgi information disclosure CVSS 4.0MEDIUM 6.9
TI-2025-03800 TOTOLINK A720R Log cstecgi.cgi access control CVSS 4.0MEDIUM 6.9

See all 27 →

Sources

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