CVE-2001-1064

Cisco CBOS 2.0.1-2.4.2ap - Denial of Service via HTTP or Telnet Connection Flood

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2001-1064. PoCs published by Cisco Security.

AI-analyzed exploit summary The exploit describes a DoS vulnerability in Cisco CBOS firmware for 600 series routers, where multiple TCP connections to administrative ports (21 or 80) cause instability and require a reboot. No actual exploit code is provided, only a description and affected models.

Description

Cisco 600 series routers running CBOS 2.0.1 through 2.4.2ap allows remote attackers to cause a denial of service via multiple connections to the router on the (1) HTTP or (2) telnet service, which causes the router to become unresponsive and stop forwarding packets.

Exploits (1)

exploitdb WRITEUP VERIFIED
by Cisco Security · textdoshardware
https://www.exploit-db.com/exploits/21092

The exploit describes a DoS vulnerability in Cisco CBOS firmware for 600 series routers, where multiple TCP connections to administrative ports (21 or 80) cause instability and require a reboot. No actual exploit code is provided, only a description and affected models.

Classification
Writeup 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Cisco CBOS firmware on 600 series routers (627, 633, 673, 675, 675E, 677, 677i, 678)
No auth needed
Prerequisites: Network access to the target router's administrative ports (21 or 80)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Exploit, Patch, Vendor Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/3236
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/7025
Patch, Vendor Advisory vendor-advisory x_refsource_cisco
http://www.cisco.com/warp/public/707/cisco-cbos-webserver-pub.shtml
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/7026

Scores

EPSS 0.0537
EPSS Percentile 91.6%

Details

Status published
Products (15)
cisco/cbos 2.0.1
cisco/cbos 2.1.0
cisco/cbos 2.1.0a
cisco/cbos 2.2.0
cisco/cbos 2.2.1
cisco/cbos 2.2.1a
cisco/cbos 2.3
cisco/cbos 2.3.2
cisco/cbos 2.3.5
cisco/cbos 2.3.7
... and 5 more
Published Aug 31, 2001
Tracked Since Feb 18, 2026