Cisco IOS Denial-of-Service Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 19/05/2023. Patch affected systems as an emergency.
| Package | Affected versions | Patched versions |
|---|---|---|
| IOS | Versions not published yet (product named by CISA KEV) | |
Cisco IOS 12.2(15) and earlier allows remote attackers to cause a denial of service (refused VTY (virtual terminal) connections), via a crafted TCP connection to the Telnet or reverse Telnet port.
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