What is CVE-2021-22791?

CVE-2021-22791 is a medium-severity vulnerability in Schneider-electric Modicon_m340_bmxp341000, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2021-09-02.

How severe is CVE-2021-22791?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Buffer overflow in Schneider-electric Modicon_m340_bmxp341000

CVE-2021-22791

A CWE-787: Out-of-bounds Write vulnerability that could cause a Denial of Service on the Modicon PLC controller / simulator when updating the controller application with a specially crafted project file exists in Modicon M580 CPU (part num…

Vulnerability class: Buffer Overflow

EPSS: 0.008 (53.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

cybersecurity@se.com (x_refsource_MISC, Not Applicable)
nvd@nist.gov (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-22791?: CVE-2021-22791 is a medium-severity vulnerability in Schneider-electric Modicon_m340_bmxp341000, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2021-09-02.
How severe is CVE-2021-22791?: Medium severity. CVSS v3 base score is 6.5 out of 10.