CVE-2018-7856: schneider-electric modicon_m340_firmware
CVSS: 7.5v3.1HighModified
Published 22-05-2019Last modified 05-08-2024
Vulnerability summary
CVE-2018-7856 is a high (CVSS 7.5) vulnerability in schneider-electric modicon_m340_firmware. EPSS estimates a 1.58% chance of exploitation in the next 30 days, higher than 75.1% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
1.58%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Timeline
- 22-05-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
A CWE-248: Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause a possible denial of Service when writing invalid memory blocks to the controller over Modbus.
CVSS metrics
2 scores · 1 source · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesSingle source
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
1.58%
Chance of exploitation in the next 30 days
Percentile
75%
Versus all other CVEs
30-day change
0.00 pp
From 1.58% on 19-09-2026
19-09-202619-10-2026
EPSS score1.58%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (talosintelligence.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Schneider-electric4 products
1 vendor · 4 products
References
2 links- www.schneider-electric.com/en/download/document/SEVD-2019-134-11/X Refsource MISCMitigationVendor Advisory
- www.talosintelligence.com/vulnerability_reports/TALOS-2019-0767X Refsource MISCExploitThird Party Advisory