VulnSocial

CVE-2019-6829Patch(schneider-electric / modicon_m340)

LOWCVSS 7.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch schneider-electric modicon_m340 systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

A CWE-248: Uncaught Exception vulnerability exists in Modicon M580 (firmware version prior to V2.90) and Modicon M340 (firmware version prior to V3.10), which could cause a possible denial of service when writing to specific memory addresses in the controller over Modbus.

schneider-electric CVEsBack to dashboard
1.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-248CWE-755

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • modicon_m340
  • modicon_m340_firmware
  • modicon_m580
  • modicon_m580_firmware

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Affected systems

Vendors
schneider-electric
Products
modicon_m340modicon_m340_firmwaremodicon_m580modicon_m580_firmware

1 version affected across 4 products

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-06-02: 1Patch / Workaround · 2026-06-02: 1Technical Details · 2026-06-02: 106-02
Signal classification1 categories
Patch
1100.0%
Full discourse1 post
  • DFIR Lab@DFIR_Lab
    Patch

    🚨 HIGH severity CVE-2019-6829 (CVSS 7.5) affects Schneider Electric Modicon M580 & M340 PLCs. Uncaught exception vulnerability enables remote DoS via Modbus writes. Upgrade M580 to V2.90+, M340 to V3.10+. #CVE #Vulnerability #PatchNow https://t.co/JEX1dDEx3E

    Post summary

    The tweet reports a high‑severity CVE-2019-6829 that causes a remote DoS on Schneider Electric PLCs via Modbus writes and recommends firmware upgrades to mitigate the issue.

    0000039
    35 followersView on X
CPE platform detail4 entries

4 of 4 entries

PartVendorProductVersionTarget SWTarget HW
HWschneider-electricmodicon_m340---
OSschneider-electricmodicon_m340_firmware---
HWschneider-electricmodicon_m580---
OSschneider-electricmodicon_m580_firmware---

Explore more

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