CVE-2002-0438

CVE-2002-0438 is a medium-severity vulnerability in Zyxel Zywall10 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 ZyWALL 10 before 3.50 allows remote attackers to cause a denial of service via an ARP packet with the firewall's IP address and an incorrect MAC address, which causes the firewall to disable the LAN interface.

Frequently asked questions

What is CVE-2002-0438?
ZyXEL ZyWALL 10 before 3.50 allows remote attackers to cause a denial of service via an ARP packet with the firewall's IP address and an incorrect MAC address, which causes the firewall to disable the LAN interface.
How severe is CVE-2002-0438?
CVE-2002-0438 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2002-0438 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2002-0438?
CVE-2002-0438 primarily affects Zyxel Zywall10. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2002-0438?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2002-0438 published?
CVE-2002-0438 was published on 2002-07-26 and last updated on 2026-06-16.

References

Affected products (6)

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