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Fencer Vulns
high 7.4

CVE-2019-15265 json

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

published 2019-10-16 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-6274

cvss
7.4
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 24%
public exploits
0
none known

Summary

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.

Patch / fix

  • cisco aironet_1540_firmware 8.5.151.0, 8.8.120.0, 8.9.100.0
  • cisco aironet_1560_firmware 8.5.151.0, 8.8.120.0, 8.9.100.0
  • cisco aironet_1800_firmware 8.5.151.0, 8.8.120.0, 8.9.100.0
  • cisco aironet_2800_firmware 8.5.151.0, 8.8.120.0, 8.9.100.0
  • cisco aironet_3800_firmware 8.5.151.0, 8.8.120.0, 8.9.100.0

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
23 mo ago

Exploit prediction

0.32% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 7.4 CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
NVD 3.1 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • Cisco Cisco Aironet Access Point Software

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.