← Vulnerability feed

Vulnerability record · CVE-2001-1064 · published 31 August 2001

CVE-2001-1064: Cisco cbos vulnerability

Cisco · Cbos

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.

5.0 CVSS 2.0 Medium EPSS 5.4% · top 7.6%
5.0CVSS 2.0 base score
5.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References, 2 tagged exploit
16 Jun 2026Last modified by NVD

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.

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

Track CVE-2001-1064 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2001-0751Cisco cbos vulnerabilityCisco switches and routers running CBOS 2.3.8 and earlier use predictable TCP Initial Sequence Numbers (ISN), which allows remote attackers to spoof …EPSS 2.6%7.5CVE-2001-0753Cisco cbos vulnerabilityCisco CBOS 2.3.8 and earlier stores the passwords for (1) exec and (2) enable in cleartext in the NVRAM and a configuration file, which could allow u…EPSS 1.2%5.0CVE-2007-4430Cisco cli improper input validation vulnerabilityUnspecified vulnerability in Cisco IOS 12.0 through 12.4 allows context-dependent attackers to cause a denial of service (device restart and BGP rout…EPSS 13%5.0CVE-2002-0886Cisco cbos vulnerabilityCisco DSL CPE devices running CBOS 2.4.4 and earlier allows remote attackers to cause a denial of service (hang or memory consumption) via (1) a larg…EPSS 5.4%5.0CVE-2001-0752Cisco cbos vulnerabilityCisco CBOS 2.3.8 and earlier allows remote attackers to cause a denial of service via an ICMP ECHO REQUEST (ping) with the IP Record Route option set.EPSS 1.7%5.0CVE-2001-0754Cisco cbos vulnerabilityCisco CBOS 2.3.8 and earlier allows remote attackers to cause a denial of service via a series of large ICMP ECHO REPLY (ping) packets, which cause i…EPSS 1.3%5.0CVE-2001-1065Cisco cbos vulnerabilityWeb-based configuration utility in Cisco 600 series routers running CBOS 2.0.1 through 2.4.2ap binds itself to port 80 even when web-based configurat…EPSS 1.1%2.1CVE-2001-0444Cisco cbos vulnerabilityCisco CBOS 2.3.0.053 sends output of the "sh nat" (aka "show nat") command to the terminal of the next user who attempts to connect to the router via…EPSS 0.48%

Source: NIST National Vulnerability Database (record CVE-2001-1064), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.