CVE-2001-1194

CVE-2001-1194 is a medium-severity vulnerability in Zyxel Prestige 1600 with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Zyxel Prestige 681 and 1600 SDSL Routers allow remote attackers to cause a denial of service via malformed packets with (1) an IP length less than actual packet size, or (2) fragmented packets whose size exceeds 64 kilobytes after reassembly.

Frequently asked questions

What is CVE-2001-1194?
Zyxel Prestige 681 and 1600 SDSL Routers allow remote attackers to cause a denial of service via malformed packets with (1) an IP length less than actual packet size, or (2) fragmented packets whose size exceeds 64 kilobytes after reassembly.
How severe is CVE-2001-1194?
CVE-2001-1194 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2001-1194 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-1194?
CVE-2001-1194 primarily affects Zyxel Prestige 1600. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2001-1194?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2001-1194 published?
CVE-2001-1194 was published on 2001-12-14 and last updated on 2026-06-16.

References

Affected products (2)