How severe is CVE-2025-60686?

CVE-2025-60686 has a CVSS 3.x base score of 5.1, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.

Is CVE-2025-60686 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-60686?

CVE-2025-60686 primarily affects Totolink A720r Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-60686?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-60686 have an EU (EUVD) identifier?

Yes. CVE-2025-60686 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-175300.

When was CVE-2025-60686 published?

CVE-2025-60686 was published on 2025-11-13 and last updated on 2026-07-05.

CVE-2025-60686

CVE-2025-60686 is a medium-severity vulnerability in Totolink A720r Firmware with a CVSS 3.x base score of 5.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-121.

Key facts

Severity: Medium (CVSS 3.x base score 5.1)
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-175300
Weakness: CWE-121
Affected product: Totolink A720r Firmware
Published: 2025-11-13
Last modified: 2026-07-05

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2025-60686?: CVE-2025-60686 has a CVSS 3.x base score of 5.1, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.
Is CVE-2025-60686 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-60686?: CVE-2025-60686 primarily affects Totolink A720r Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-60686?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-60686 have an EU (EUVD) identifier?: Yes. CVE-2025-60686 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-175300.
When was CVE-2025-60686 published?: CVE-2025-60686 was published on 2025-11-13 and last updated on 2026-07-05.

References

EU advisories (EUVD)

http://totolink.com

Affected products (3)

cpe:2.3:o:totolink:a720r_firmware:4.1.5cu.614_b20230630:*:*:*:*:*:*:*
cpe:2.3:o:totolink:lr1200gb_firmware:9.1.0u.6619_b20230130:*:*:*:*:*:*:*
cpe:2.3:o:totolink:nr1800x_firmware:9.1.0u.6681_b20230703:*:*:*:*:*:*:*

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