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TI-2016-07549 Aliases CVE-2016-9221GHSA-h84g-xq42-7q7f

Resource management flaw in Cisco Mobility Express 2800 Series and 3800 Series Access…

Priority LOW 21CWE-399Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · Low
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

A Denial of Service Vulnerability in 802.11 ingress connection authentication handling for the Cisco Mobility Express 2800 and 3800 Access Points (APs) could allow an unauthenticated, adjacent attacker to cause authentication to fail. Affected Products: This vulnerability affects Cisco Mobility Express 2800 Series and 3800 Series Access Points when configured in local mode in 40 MHz. More Information: CSCvb33575. Known Affected Releases: 8.2(121.12) 8.4(1.82). Known Fixed Releases: 8.2(131.2) 8.2(131.3) 8.2(131.4) 8.2(141.0) 8.3(104.53) 8.3(104.54) 8.4(1.80) 8.4(1.85).

Why it matters now

EPSS 0.00544 45th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Cisco Mobility Express 2800 Series and 3800 Series Access PointsCisco Mobility Express 2800 Series and 3800 Series Access Points—No fix listedCNA
  • Cisco Mobility Express 2800 Series and 3800 Series Access Points Vendor— Affected Cisco Mobility Express 2800 Series and 3800 Series Access Points Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:cisco:aironet_access_point_software:8.2\(121.12\):*:*:*:*:*:*:*8.2(121.12)VulnerableCisco
cpe:2.3:o:cisco:aironet_access_point_software:8.4\(1.82\):*:*:*:*:*:*:*8.4(1.82)VulnerableCisco
  • cpe:2.3:o:cisco:aironet_access_point_software:8.2\(121.12\):*:*:*:*:*:*:* Versions 8.2(121.12) Vulnerable ·Cisco
  • cpe:2.3:o:cisco:aironet_access_point_software:8.4\(1.82\):*:*:*:*:*:*:* Versions 8.4(1.82) Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2016-9221
  2. 2026-10-03 Alias added: GHSA-h84g-xq42-7q7f

References

Advisory 1

  • TI-2018-00197 Improper input validation in Cisco Aironet 1810, 1830, and 1850 Series Access Points CVSS 3.0HIGH 8.6
  • TI-2017-02928 Access control flaw in Cisco Mobility Express 1800 Access Point Series CVSS 3.0CRITICAL 9.8
  • TI-2022-05181 Cisco Embedded Wireless Controller with Catalyst Access Points IP Flood Denial of Service Vulnerability CVSS 3.1HIGH 8.6
  • TI-2020-03104 Cisco Aironet Access Points UDP Flooding Denial of Service Vulnerability CVSS 3.1HIGH 8.6
  • TI-2021-01164 Cisco Aironet Access Points FlexConnect Upgrade Information Disclosure Vulnerability CVSS 3.1HIGH 7.5
  • TI-2020-03103 Cisco Aironet Access Point Authentication Flood Denial of Service Vulnerability CVSS 3.1HIGH 8.6
See all 26 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences