Schneider Electric’s Buffer Blunder: CVSS 8.7 Vulnerability Strikes Modicon M580 PLCs!
Schneider Electric’s Modicon M580 PLCs and others are facing a CVSS v4 score of 8.7 due to an incorrect calculation of buffer size vulnerability. This flaw allows unauthenticated users to cause a denial-of-service by sending a crafted HTTPS packet. Remember, even cybercriminals appreciate a well-crafted packet!

Hot Take:
Looks like Schneider Electric’s Modicon M580 PLCs have a vulnerability that could cause a denial-of-service attack. Who knew that the key to taking down critical infrastructure could be as simple as a poorly calculated buffer size? Talk about a rookie mistake! It’s like forgetting to carry the one in a math problem, except this time the result is a cyber crisis. Time to patch up those systems, folks!
Key Points:
- Schneider Electric’s Modicon M580 PLCs, BMENOR2200H, and EVLink Pro AC have a vulnerability with a CVSS v4 score of 8.7.
- Incorrect calculation of buffer size can lead to denial-of-service attacks when unauthenticated users send crafted HTTPS packets.
- Affected products include various versions of Modicon M580 and EVLink Pro AC.
- Schneider Electric provides firmware updates and mitigation strategies.
- Users are advised to apply patches and follow cybersecurity best practices to minimize risk.
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