CVE-2004-0244

Cisco IOS - Denial of Service via Layer 2 Frame with Inconsistent Length Values

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2004-0244. PoCs published by blackangels.

AI-analyzed exploit summary This Perl script is a multi-exploit tool targeting various Cisco vulnerabilities, including DoS and arbitrary command execution. It contains multiple exploit functions for different Cisco devices and software versions.

Description

Cisco 6000, 6500, and 7600 series systems with Multilayer Switch Feature Card 2 (MSFC2) and a FlexWAN or OSM module allow local users to cause a denial of service (hang or reset) by sending a layer 2 frame packet that encapsulates a layer 3 packet, but has inconsistent length values with that packet.

Exploits (1)

exploitdb WORKING POC VERIFIED
by blackangels · perldoshardware
https://www.exploit-db.com/exploits/23638

This Perl script is a multi-exploit tool targeting various Cisco vulnerabilities, including DoS and arbitrary command execution. It contains multiple exploit functions for different Cisco devices and software versions.

Classification
Working Poc 90%
Attack Type
Dos | Auth Bypass
Complexity
Moderate
Reliability
Reliable
Target: Cisco IOS, Cisco Catalyst, Cisco 677/678, CiscoSecure ACS
No auth needed
Prerequisites: Network access to target device · Specific Cisco device and software version
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (6)

Core 6
Core References
Vendor Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/9562
Vendor Advisory vendor-advisory x_refsource_cisco
http://www.cisco.com/warp/public/707/cisco-sa-20040203-cat6k.shtml
US Government Resource third-party-advisory x_refsource_cert-vn
http://www.kb.cert.org/vuls/id/810062
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/10780
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/15013
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5828

Scores

EPSS 0.0110
EPSS Percentile 61.4%

Details

CWE
CWE-20
Status published
Products (3)
cisco/ios 12.1e
cisco/ios 12.2sy
cisco/ios 12.2za
Published Nov 23, 2004
Tracked Since Feb 18, 2026