CVE-2020-7502
CVE-2020-7502 is a high-severity vulnerability in Schneider-electric Modicon M218 Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 5.0
- EPSS exploit prediction: 2% (72nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Schneider-electric Modicon M218 Firmware
- Published:
- Last modified:
Description
A CWE-787: Out-of-bounds Write vulnerability exists in Modicon M218 Logic Controller (Firmware version 4.3 and prior), which may cause a Denial of Service when specific TCP/IP crafted packets are sent to the Modicon M218 Logic Controller.
Frequently asked questions
- What is CVE-2020-7502?
- A CWE-787: Out-of-bounds Write vulnerability exists in Modicon M218 Logic Controller (Firmware version 4.3 and prior), which may cause a Denial of Service when specific TCP/IP crafted packets are sent to the Modicon M218 Logic Controller.
- How severe is CVE-2020-7502?
- CVE-2020-7502 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2020-7502 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-7502?
- CVE-2020-7502 affects Schneider-electric Modicon M218 Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-7502?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-7502 published?
- CVE-2020-7502 was published on 2020-06-16 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:schneider-electric:modicon_m218_firmware:*:*:*:*:*:*:*:*
More vulnerabilities in Schneider-electric Modicon M218 Firmware
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