Improper input validation in Schneider-electric Modicon_m241
CVE-2021-22699
Improper Input Validation vulnerability exists in Modicon M241/M251 logic controllers firmware prior to V5.1.9.1 that could cause denial of service when specific crafted requests are sent to the controller over HTTP.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.010 (58.3th 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_m241
- Schneider-electric Modicon_m241_firmware
- Schneider-electric Modicon_m251
- Schneider-electric Modicon_m251_firmware
- N/a Modicon M241/m251 Logic Controllers Firmware Prior To V5.1.9.1 — versions Modicon M241/M251 logic controllers firmware prior to V5.1.9.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cybersecurity@se.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-22699?
- CVE-2021-22699 is a high-severity vulnerability in Schneider-electric Modicon_m241, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2021-05-26.
- How severe is CVE-2021-22699?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-22699 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.