CVE-2025-60686

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.

CVSS v3 5.1 MEDIUM

5.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 2.5

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
http://totolink.com	Broken Link
https://github.com/yifan20020708/SGTaint-0-day/blob/main/ToToLink/ToToLink-A720R/CVE-2025-60686.md	Exploit Third Party Advisory
https://www.totolink.net/	Product

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:totolink:a720r_firmware:4.1.5cu.614_b20230630:*:*:*:*:*:*:*

cpe:2.3:h:totolink:a720r:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:totolink:lr1200gb_firmware:9.1.0u.6619_b20230130:*:*:*:*:*:*:*

cpe:2.3:h:totolink:lr1200gb:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND

cpe:2.3:o:totolink:nr1800x_firmware:9.1.0u.6681_b20230703:*:*:*:*:*:*:*

cpe:2.3:h:totolink:nr1800x:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2025-11-13 16:15

Updated : 2025-11-19 17:41

NVD link : CVE-2025-60686

Mitre link : CVE-2025-60686

CVE.ORG link : CVE-2025-60686

JSON object : View

Products Affected

totolink

nr1800x
a720r
nr1800x_firmware
lr1200gb
lr1200gb_firmware
a720r_firmware

CWE

CWE-121

Stack-based Buffer Overflow

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