Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2024-20303 |
CWE-ID | CWE-459 |
Exploitation vector | Local network |
Public exploit | N/A |
Vulnerable software Subscribe |
Cisco IOS XE Operating systems & Components / Operating system Catalyst 9800-CL Wireless Controllers for Cloud Hardware solutions / Routers & switches, VoIP, GSM, etc Catalyst 9800 Embedded Wireless Controller Hardware solutions / Routers & switches, VoIP, GSM, etc Catalyst 9800 Series Wireless Controllers Hardware solutions / Routers & switches, VoIP, GSM, etc Embedded Wireless Controller 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: #VU87904
Risk: Low
CVSSv3.1: 6.4 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2024-20303
CWE-ID:
CWE-459 - Incomplete cleanup
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to incomplete cleanup in the multicast DNS (mDNS) gateway feature. A remote attacker on the local network can cause the wireless controller to have high CPU utilization, leading to denial of service condition.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCisco IOS XE: 17.6 - 17.9.3a
Catalyst 9800-CL Wireless Controllers for Cloud: All versions
Catalyst 9800 Embedded Wireless Controller: All versions
Catalyst 9800 Series Wireless Controllers: All versions
Embedded Wireless Controller 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.