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CVE-2019-6811

HIGHCVSS 7.5/10EPSS 1.31%

Last modified

CVE-2019-6811 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An Improper Check for Unusual or Exceptional Conditions (CWE-754) vulnerability exists in Modicon Quantum 140 NOE771x1 version 6.9 and earlier, which could cause denial of service when the module receives an IP fragmented packet with a length greater than 65535 bytes. The module then requires a power cycle to recover.. EPSS estimates a 1.31% chance of exploitation in the next 30 days.

Description

An Improper Check for Unusual or Exceptional Conditions (CWE-754) vulnerability exists in Modicon Quantum 140 NOE771x1 version 6.9 and earlier, which could cause denial of service when the module receives an IP fragmented packet with a length greater than 65535 bytes. The module then requires a power cycle to recover.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
1.31%

67.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Schneider-ElectricModicon Quantum 140noe77101 Firmware<= 6.9
Schneider-ElectricModicon Quantum 140noe77111 Firmware<= 6.9

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-6811?
An Improper Check for Unusual or Exceptional Conditions (CWE-754) vulnerability exists in Modicon Quantum 140 NOE771x1 version 6.9 and earlier, which could cause denial of service when the module receives an IP fragmented packet with a length greater than 65535 bytes. The module then requires a power cycle to recover.
How severe is CVE-2019-6811?
CVE-2019-6811 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.31% probability of exploitation in the next 30 days.
How do I fix CVE-2019-6811?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-6811?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST