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CVE-2019-10977

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-05-23 · updated 2026-06-17
• Weakness: CWE-400

Description

In Mitsubishi Electric MELSEC-Q series Ethernet module QJ71E71-100 serial number 20121 and prior, an attacker could send crafted TCP packets against the FTP service, forcing the target devices to enter an error mode and cause a denial-of-service condition.

Affected products

• Mitsubishielectric Qj71E71-100 Firmware: through 20121

References

• http://www.securityfocus.com/bid/108419
• https://ics-cert.us-cert.gov/advisories/ICSA-19-141-02
• http://www.securityfocus.com/bid/108419
• https://ics-cert.us-cert.gov/advisories/ICSA-19-141-02

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