CVE-2024-20354

HIGH

7.4

CVSS Score

Published: March 27, 2024 at 04:47 PM UTC

Updated: June 17, 2026 at 07:06 AM UTC

18 products affected across 1 vendorIOS XeWireless LAN Controller SoftwareAironet 1552H

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Severity

HIGH7.4

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

Description

A vulnerability in the handling of encrypted wireless frames of Cisco Aironet Access Point (AP) Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on the affected device. This vulnerability is due to incomplete cleanup of resources when dropping certain malformed frames. An attacker could exploit this vulnerability by connecting as a wireless client to an affected AP and sending specific malformed frames over the wireless connection. A successful exploit could allow the attacker to cause degradation of service to other clients, which could potentially lead to a complete DoS condition.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

IOS Xe · Cisco

95%

16.12.4a ≤ v < 17.1.017.10.0 ≤ v < 17.12.217.3.0 ≤ v < 17.3.917.4.0 ≤ v < 17.6.717.7.0 ≤ v < 17.9.5

Affected range stops below 17.1.0, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.12.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.3.9, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.6.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.9.5, so it looks safe — our inference, not a vendor statement

cisco-aironet-1530e (environment) · cisco-aironet-1530i (environment) · cisco-aironet-1552h (environment) · cisco-aironet-1552s (environment) · cisco-aironet-1552wu (environment) · cisco-aironet-1700i (environment) · cisco-aironet-2700e (environment) · cisco-aironet-2700i (environment) · cisco-aironet-3700e (environment) · cisco-aironet-3700i (environment) · cisco-aironet-3700p (environment) · cisco-ap801 (environment) · cisco-ap802 (environment) · cisco-ap803 (environment) · cisco-iw3700 (environment)

Wireless LAN Controller Software · Cisco

95%

8.10.130.0 ≤ v < 8.10.190.818.5.171.0 ≤ v < 8.6.0.0

Affected range stops below 8.10.190.81, so it looks safe — our inference, not a vendor statement

Affected range stops below 8.6.0.0, so it looks safe — our inference, not a vendor statement

Aironet Access Point · Cisco

60%

All versions

Aironet 1530E · Ciscodevice

80%

All versions

Aironet 1530I · Ciscodevice