How to fix CVE-2025-10685?

Within 24 hours: Inventory all deployed smartLink SW-PN (≤1.03) and SW-HT (≤1.42) instances and isolate affected systems from untrusted networks. Within 7 days: Implement network segmentation to restrict access to these webserver modules to authorized personnel only, deploy web application firewall rules to block malicious payloads targeting buffer overflow vectors, and disable remote access capabilities if operationally feasible. Within 30 days: Monitor vendor advisories for patch availability, evaluate replacement or upgrade timelines for affected modules, and conduct penetration testing on isolated instances to validate compensating control effectiveness.

Is Heap Overflow affected by CVE-2025-10685?

A heap-based buffer overflow vulnerability (CVE-2025-10685) affects Softing smartLink industrial automation webserver modules used in operational technology environments, with no patch currently available.

CVE-2025-10685

EUVD-2025-208727 HIGH

2026-03-16 Softing

7.7

CVSS 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:A/V:X/RE:L/U:Red

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

Analysis Generated

Mar 16, 2026 - 14:00 vuln.today

EUVD ID Assigned

Mar 16, 2026 - 14:00 euvd

EUVD-2025-208727

CVE Published

Mar 16, 2026 - 13:14 nvd

HIGH 7.7

Description

Heap-based buffer overflow vulnerability in Softing Industrial Automation GmbH smartLink SW-PN and smartLink SW-HT (Webserver modules) allows overflow buffers.This issue affects: smartLink SW-PN: through 1.03 smartLink SW-HT: through 1.42

Analysis

Technical Context

A buffer overflow occurs when data written to a buffer exceeds its allocated size, potentially overwriting adjacent memory and corrupting program state. This vulnerability is classified as Heap-based Buffer Overflow (CWE-122).

Affected Products

Affected products: Softing Smartlink Sw-Pn, Softing Smartlink Sw-Ht

Remediation

Use memory-safe languages or bounds-checked functions. Enable ASLR, DEP/NX, and stack canaries. Apply vendor patches promptly.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.0

CVSS: +38

POC: 0

CVE-2025-10685 vulnerability details – vuln.today

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CVE-2025-10685

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Analysis

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CVE-2025-10685

CVSS Vector

Lifecycle Timeline

Tags

Description

Analysis

Technical Context

Affected Products

Remediation

Priority Score

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External POC / Exploit Code