CVE-2019-6809
A CWE-248: Uncaught Exception vulnerability exists in Modicon M580 (firmware versions prior to V2...
A CWE-248: Uncaught Exception vulnerability exists in Modicon M580 (firmware versions prior to V2.90), Modicon M340 (firmware versions prior to V3.10), Modicon Premium (all versions), Modicon Quantum (all versions), which could cause a possible denial of service when reading invalid data from the controller.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
A CWE-248: Uncaught Exception vulnerability exists in Modicon M580 (firmware versions prior to V2.90), Modicon M340 (firmware versions prior to V3.10), Modicon Premium (all versions), Modicon Quantum (all versions), which could cause a possible denial of service when reading invalid data from the controller.
- Record
CVE-2019-6809- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 7.8 High
AV:N/AC:L/Au:N/C:N/I:N/A:C - Weakness
- CWE-248, CWE-755
- Updated
- 2026-11-02
CVE List No score
A CWE-248: Uncaught Exception vulnerability exists in Modicon M580 (firmware versions prior to V2.90), Modicon M340 (firmware versions prior to V3.10), Modicon Premium (all versions), Modicon Quantum (all versions), which could cause a possible denial of service when reading invalid data from the controller.
- Record
CVE-2019-6809- Weakness
- CWE-248
- Updated
- 2026-11-02
EUVDEUVD-2019-16363 No score
A CWE-248: Uncaught Exception vulnerability exists in Modicon M580 (firmware versions prior to V2.90), Modicon M340 (firmware versions prior to V3.10), Modicon Premium (all versions), Modicon Quantum (all versions), which could cause a possible denial of service when reading invalid data from the controller.
- Record
EUVD-2019-16363- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-f73x-vrcr-2p7q No score
A CWE-248: Uncaught Exception vulnerability exists in Modicon M580 (firmware versions prior to V2...
A CWE-248: Uncaught Exception vulnerability exists in Modicon M580 (firmware versions prior to V2.90), Modicon M340 (firmware versions prior to V3.10), Modicon Premium (all versions), Modicon Quantum (all versions), which could cause a possible denial of service when reading invalid data from the controller.
- Record
GHSA-f73x-vrcr-2p7q- Weakness
- CWE-755
- Updated
- 2026-11-02
Affected products
- schneider electric modicon m340
- schneider electric se modicon m340
- schneider electric se modicon m580
- schneider electric se modicon premium
- schneider electric se modicon quantum
- schneider-electric modicon m340 firmware
- schneider-electric modicon m580 firmware
- schneider-electric modicon premium firmware
- schneider-electric modicon quantum firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-6809 is a high vulnerability (CVSS 7.5) in Schneider Electric Modicon M340, published September 17, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.76%, the 78th percentile. No source names a fixed version.