CVE-2019-6829: schneider electric se modicon m340 Uncaught Exception
CVSS: 7.8v2.0HighModified
Published 17-09-2019Last modified 29-05-2026
Vulnerability summary
CVE-2019-6829 is a high (CVSS 7.8) Uncaught Exception vulnerability in schneider electric se modicon m340. EPSS estimates a 1.61% chance of exploitation in the next 30 days, higher than 75.5% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v2.0 (NVD)EPSS score
1.61%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 17-09-2019PublishedVulnerability first disclosed.
- 29-05-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 7.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 2 agree
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
High 7.8Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:CSourcesSingle source
EPSS trend
Probability
1.61%
Chance of exploitation in the next 30 days
Percentile
76%
Versus all other CVEs
30-day change
0.00 pp
From 1.61% on 19-09-2026
19-09-202619-10-2026
EPSS score1.61%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Schneider electric se2 products
- modicon m340firmware version prior to V3.10
- modicon m580firmware version prior to V2.90
Schneider-electric2 products
- modicon_m340_firmware< 3.10
- modicon_m580_firmware< 2.90
2 vendors · 4 products