TI-2019-01449 Aliases CVE-2019-1826 GHSA-72jx-gchv-4v87

Cisco Aironet Series Access Points Quality of Service Denial of Service Vulnerability

LOW 31CWE-20Published 2019-04-18 · Updated 2024-11-21

Key facts

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

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

Summary

A vulnerability in the quality of service (QoS) feature of Cisco Aironet Series Access Points (APs) could allow an authenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper input validation on QoS fields within Wi-Fi frames by the affected device. An attacker could exploit this vulnerability by sending malformed Wi-Fi frames to an affected device. A successful exploit could allow the attacker to cause the affected device to crash, resulting in a DoS condition.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00559 46th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Cisco	Cisco Aironet Access Point Software	8.5	—	No fix listed	CNA

Cisco Aironet Access Point Software VendorCisco Affected 8.5 Fixed in — No fix listed CNA

CPE configurations NVD · 13

CPE	Versions	Role	Vendor
cpe:2.3:o:cisco:aironet_access_point_firmware:-:::::::*	not specified by NVD	Vulnerable	Cisco
cpe:2.3:h:cisco:aironet_1562d:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:h:cisco:aironet_1562e:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:h:cisco:aironet_1562i:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:h:cisco:aironet_2800e:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:h:cisco:aironet_2800i:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:h:cisco:aironet_3800e:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:h:cisco:aironet_3800i:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:h:cisco:aironet_3800p:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:h:cisco:aironet_4800:-:::::::*	not specified by NVD	Running on	Cisco

cpe:2.3:o:cisco:aironet_access_point_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Cisco
cpe:2.3:h:cisco:aironet_1562d:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:h:cisco:aironet_1562e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:h:cisco:aironet_1562i:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:h:cisco:aironet_2800e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:h:cisco:aironet_2800i:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:h:cisco:aironet_3800e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:h:cisco:aironet_3800i:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:h:cisco:aironet_3800p:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:h:cisco:aironet_4800:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco

Show 3 more CPE

CPE	Versions	Role	Vendor
cpe:2.3:o:cisco:aironet_access_point_firmware:8.5\(131.3\):::::::*	8.5(131.3)	Vulnerable	Cisco
cpe:2.3:h:cisco:aironet_1850e:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:h:cisco:aironet_1850i:-:::::::*	not specified by NVD	Running on	Cisco

cpe:2.3:o:cisco:aironet_access_point_firmware:8.5\(131.3\):*:*:*:*:*:*:* Versions 8.5(131.3) Vulnerable ·Cisco
cpe:2.3:h:cisco:aironet_1850e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:h:cisco:aironet_1850i:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2019-1826
2026-10-03 Alias added: GHSA-72jx-gchv-4v87

References

Advisory 1

20190417 Cisco Aironet Series Access Points Quality of Service Denial of Service Vulnerability

TI-2017-02931 Credentials management flaw in Cisco Aironet 1830 Series and 1850 Series Access Points CVSS 3.1CRITICAL 9.8
TI-2017-02969 Improper input validation in Cisco Aironet 1800, 2800, and 3800 Series Access Points CVSS 3.0HIGH 7.5
TI-2019-01457 Cisco Aironet Series Access Points Denial of Service Vulnerability CVSS 3.0HIGH 7.4
TI-2019-01452 Cisco Aironet Series Access Points Command Injection Vulnerability CVSS 3.1MEDIUM 6.7
TI-2019-01458 Cisco Aironet Series Access Points Directory Traversal Vulnerability CVSS 3.0MEDIUM 4.4

Sources

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