Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2023-20202 |
CWE-ID | CWE-20 |
Exploitation vector | Local network |
Public exploit | N/A |
Vulnerable software Subscribe |
Cisco IOS XE Operating systems & Components / Operating system Catalyst 9800 Embedded Wireless Controller Hardware solutions / Routers & switches, VoIP, GSM, etc Catalyst 9800 Series Wireless Controllers Hardware solutions / Routers & switches, VoIP, GSM, etc Catalyst 9800-CL Wireless Controllers for Cloud Hardware solutions / Routers & switches, VoIP, GSM, etc Embedded Wireless Controllers on Catalyst Access Points Hardware solutions / Routers & switches, VoIP, GSM, etc |
Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU81291
Risk: Low
CVSSv3.1: 5.3 [CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-20202
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in the Wireless Network Control daemon (wncd). A remote attacker on the local network can pass specially crafted input to the application and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCisco IOS XE: 17.8.1 - 17.9.2
Catalyst 9800 Embedded Wireless Controller: All versions
Catalyst 9800 Series Wireless Controllers: All versions
Catalyst 9800-CL Wireless Controllers for Cloud: All versions
Embedded Wireless Controllers on Catalyst Access Points: All versions
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.