CVE-1999-0791

Hybrid Network Cable Modems - Unauthenticated Remote Administration via HSMP Protocol

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-1999-0791. PoCs published by KSR[T].

AI-analyzed exploit summary The exploit describes a vulnerability in Hybrid Network's cable modems due to lack of authentication in the HSMP protocol over UDP, allowing packet spoofing and potential arbitrary code execution. No actual exploit code is provided, only references to external binaries.

Description

Hybrid Network cable modems do not include an authentication mechanism for administration, allowing remote attackers to compromise the system through the HSMP protocol.

Exploits (1)

exploitdb WRITEUP VERIFIED
by KSR[T] · textremotehardware
https://www.exploit-db.com/exploits/19538

The exploit describes a vulnerability in Hybrid Network's cable modems due to lack of authentication in the HSMP protocol over UDP, allowing packet spoofing and potential arbitrary code execution. No actual exploit code is provided, only references to external binaries.

Classification
Writeup 90%
Attack Type
Other
Complexity
Trivial
Reliability
Theoretical
Target: Hybrid Network's cable modems (HSMP protocol)
No auth needed
Prerequisites: Network access to the target cable modem · Ability to spoof UDP packets
mistral-large-3 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/695

Scores

EPSS 0.0377
EPSS Percentile 88.6%

Details

Status published
Products (2)
hybrid_network/cable_modem
hybrid_network/hsmp
Published Oct 06, 1999
Tracked Since Feb 18, 2026