CVE-2019-15265

Cisco Aironet Access Points Bridge Protocol Data Unit Port Disable Denial of Service Vulnerability

MEDIUM
6.5
CVSS Score
Published: October 16, 2019 at 06:36 PM UTC
Updated: June 17, 2026 at 02:19 AM UTC
11 products affected across 1 vendorAironet 3800 FirmwareAironet 2800 FirmwareAironet 1800 Firmware

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

A vulnerability in the bridge protocol data unit (BPDU) forwarding functionality of Cisco Aironet Access Points (APs) could allow an unauthenticated, adjacent attacker to cause an AP port to go into an error disabled state. The vulnerability occurs because BPDUs received from specific wireless clients are forwarded incorrectly. An attacker could exploit this vulnerability on the wireless network by sending a steady stream of crafted BPDU frames. A successful exploit could allow the attacker to cause a limited denial of service (DoS) attack because an AP port could go offline.

Affected

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

v < 8.5.151.08.6 ≤ v < 8.8.120.08.8.125.0 ≤ v < 8.9.100.0
Affected range stops below 8.5.151.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.8.120.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.9.100.0, so it looks safe — our inference, not a vendor statement
cisco-aironet-1540 (same device)
v < 8.5.151.08.6 ≤ v < 8.8.120.08.8.125.0 ≤ v < 8.9.100.0
Affected range stops below 8.5.151.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.8.120.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.9.100.0, so it looks safe — our inference, not a vendor statement
cisco-aironet-1560 (same device)
v < 8.5.151.08.6 ≤ v < 8.8.120.08.8.125.0 ≤ v < 8.9.100.0
Affected range stops below 8.5.151.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.8.120.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.9.100.0, so it looks safe — our inference, not a vendor statement
cisco-aironet-1800 (same device)
v < 8.5.151.08.6 ≤ v < 8.8.120.08.8.125.0 ≤ v < 8.9.100.0
Affected range stops below 8.5.151.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.8.120.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.9.100.0, so it looks safe — our inference, not a vendor statement
cisco-aironet-2800 (same device)
v < 8.5.151.08.6 ≤ v < 8.8.120.08.8.125.0 ≤ v < 8.9.100.0
Affected range stops below 8.5.151.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.8.120.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.9.100.0, so it looks safe — our inference, not a vendor statement
cisco-aironet-3800 (same device)
All versions
All versions
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20

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