What is the CVSS score of CVE-2025-60686?

CVE-2025-60686 has a CVSS 3.1 base score of 5.1 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L. EPSS exploitation probability: 0.0%.

Which versions of A720R Firmware are affected by CVE-2025-60686?

CVE-2025-60686 presents moderate security risk, a stack-based buffer overflow vulnerability rated CVSS 5.1. Exploitation could cause memory corruption or application crashes.

Is there a public PoC exploit available for CVE-2025-60686?

Yes, a public proof-of-concept exploit is available for CVE-2025-60686. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2025-60686?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

A720R Firmware CVE-2025-60686

MEDIUM

Stack-based Buffer Overflow (CWE-121)

2025-11-13 cve@mitre.org

Stack Overflow Denial Of Service Buffer Overflow RCE A720R Firmware Lr1200Gb Firmware Nr1800x Firmware TOTOLINK

5.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.1 MEDIUM

AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:22 vuln.today

PoC Detected

Nov 19, 2025 - 17:41 vuln.today

Public exploit code

CVE Published

Nov 13, 2025 - 16:15 nvd

MEDIUM 5.1

DescriptionCVE.org

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.

AnalysisAI

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. Rated medium severity (CVSS 5.1), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-121. 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. Affected products include: Totolink A720R Firmware, Totolink Lr1200Gb Firmware, Totolink Nr1800X Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

CVE-2025-60686 vulnerability details – vuln.today

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A720R Firmware CVE-2025-60686

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code