CVE-1999-0791

CVE-1999-0791 is a critical-severity vulnerability in Hybrid Network Hsmp with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

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

Frequently asked questions

What is CVE-1999-0791?
Hybrid Network cable modems do not include an authentication mechanism for administration, allowing remote attackers to compromise the system through the HSMP protocol.
How severe is CVE-1999-0791?
CVE-1999-0791 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-1999-0791 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0791?
CVE-1999-0791 primarily affects Hybrid Network Hsmp. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0791?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-1999-0791 published?
CVE-1999-0791 was published on 1999-10-06 and last updated on 2026-06-16.

References

Affected products (2)