CVE intelligence and bounded remediation

CVE-2025-13901 — Schneider-Electric Modicon M241 Firmware security vulnerability

Medium CVSS 6.9

CWE-404 Improper Resource Shutdown or Release vulnerability exists that could cause partial Denial of Service on Machine Expert protocol when an unauthenticated attacker sends malicious payload to occupy active communication channels.

Severity
Medium
CVSS
6.9 (4.0)
Published
2026-03-10
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-404

Affected products

  • schneider-electric / modicon_m241_firmware
  • schneider-electric / modicon_m251_firmware
  • schneider-electric / modicon_m262_firmware

Matched remediation archetype

Resource exhaustion and denial of service

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Identify attacker-influenced work factors including input size, nesting, compression, fan-out, regex cost, allocation, recursion, retries, and connection lifetime.
  • Map per-request and shared CPU, memory, disk, descriptor, thread, queue, and downstream-service limits.
  • Determine whether authentication, tenancy, quotas, and rate controls apply before expensive processing begins.

Remediate safely

  • Bound input size, nesting, expansion, work, concurrency, queue depth, retries, and execution time before resource-intensive processing.
  • Release resources on every success, error, cancellation, and timeout path and use backpressure instead of unbounded buffering.
  • Update affected components and add small deterministic tests that assert resource ceilings rather than exhausting a host.

Authoritative sources

Complete CVE record and remediation plan

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