THREATPORT/VULNERABILITY/CVE-2019-6841
MEDIUM SEVERITY

CVE-2019-6841

Modicon M580 Firmware vulnerability

CVSS
4.9
EPSS
24.4%
EPSS pct
98th
Exploited
No known
A CWE-755: Improper Handling of Exceptional Conditions vulnerability exists in Modicon M580 with firmware (version prior to V3.10), Modicon M340 (all firmware versions), and Modicon BMxCRA and 140CRA modules (all firmware versions), which could cause a Denial of Service attack on the PLC when upgrading the firmware with no firmware image inside the package using FTP protocol.
Affected vendor
Schneider Electric
Affected product
Modicon M580 Firmware
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Weakness type (CWE)
Published
2019-10-29

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring high privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 24.4% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2019-6841

  • Confirm whether Schneider Electric Modicon M580 Firmware is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2019-6841.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2019-6841

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2019-6841 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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