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CVE-2020-3559

HIGHCVSS 8.6/10EPSS 1.40%

Last modified

CVE-2020-3559 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. A vulnerability in Cisco Aironet Access Point (AP) Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to improper handling of clients that are trying to connect to the AP. EPSS estimates a 1.40% chance of exploitation in the next 30 days.

Description

A vulnerability in Cisco Aironet Access Point (AP) Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to improper handling of clients that are trying to connect to the AP. An attacker could exploit this vulnerability by sending authentication requests from multiple clients to an affected device. A successful exploit could allow the attacker to cause the affected device to reload.

Metrics

CVSS 3.1
8.6/10

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

EPSS Probability
1.40%

69.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoWireless Lan Controller>= 8.9, < 8.10.112.0
CiscoBusiness Access Points>= 10.0, < 10.1.1.0
CiscoAccess Points< 16.12.4a
CiscoAironet Access Point Software8.5\(151.0\)
CiscoAironet Access Point Software17.2.0.26

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-3559?
A vulnerability in Cisco Aironet Access Point (AP) Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to improper handling of clients that are trying to connect to the AP. An attacker could exploit this vulnerability by sending authentication requests from multiple clients to an affected device. A successful exploit could allow the attacker to cause the affected device to reload.
How severe is CVE-2020-3559?
CVE-2020-3559 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 1.40% probability of exploitation in the next 30 days.
How do I fix CVE-2020-3559?
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-2020-3559?

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

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Source: NVD / NIST