CVE-2025-60686
mediumpriority · track · 0EPSS 0.002 · 14 %ileEURUUSEPSS · scored 2026-10-24
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (7)
Products and version ranges known to be affected.
- totolink a720r firmware= 4.1.5cu.614_b20230630nvdUScpe:2.3:o:totolink:a720r_firmware:*:*:*:*:*:*:*:*
- totolink lr1200gb firmware= 9.1.0u.6619_b20230130nvdUScpe:2.3:o:totolink:lr1200gb_firmware:*:*:*:*:*:*:*:*
- totolink nr1800x firmware= 9.1.0u.6681_b20230703nvdUScpe:2.3:o:totolink:nr1800x_firmware:*:*:*:*:*:*:*:*
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (8)
External citations — patches, advisories, analysis.
- http://totolink.comcnnvd
- https://access.redhat.com/security/cve/cve-2025-60686cnnvd
- https://github.com/yifan20020708/SGTaint-0-day/blob/main/ToToLink/ToToLink-A720R/CVE-2025-60686.mdcnnvd
- https://www.totolink.net/cnnvd
- https://github.com/yifan20020708/SGTaint-0-day/blob/main/ToToLink/ToToLink-A720R/CVE-2025-60686.mdenisa_euvd
- https://www.totolink.net/enisa_euvd
- https://github.com/yifan20020708/SGTaint-0-day/blob/main/ToToLink/ToToLink-A720R/CVE-2025-60686.mdExploitThird Party Advisorynvd
- https://www.totolink.net/Productnvd
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