Buffer overflow in Schneider-Electric Modicon M218
CVE-2020-7524
Out-of-bounds Write vulnerability exists in Modicon M218 Logic Controller (V5.0.0.7 and prior) which could cause Denial of Service when sending specific crafted IPV4 packet to the controller: Sending a specific IPv4 protocol package to Schneider Electric Modicon M218 Logic Controller can cause IPv4 devices to go down. The device does not work properly and must be powered back on to return to normal.
Vulnerability class: Buffer Overflow
EPSS: 0.014 (70.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Schneider-electric Modicon_m218
- Schneider-electric Modicon_m218_firmware
- N/a Modicon M218 Logic Controller V5.0.0.7 And Prior — versions Modicon M218 Logic Controller V5.0.0.7 and prior
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cybersecurity@se.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-7524?
- CVE-2020-7524 is a high-severity vulnerability in Schneider-Electric Modicon M218, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2020-08-31.
- How severe is CVE-2020-7524?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-7524 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.