How severe is CVE-2000-0809?

CVE-2000-0809 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2000-0809 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2000-0809?

CVE-2000-0809 primarily affects Checkpoint Firewall-1. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2000-0809?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2000-0809 published?

CVE-2000-0809 was published on 2000-11-14 and last updated on 2026-06-16.

CVE-2000-0809

CVE-2000-0809 is a medium-severity vulnerability in Checkpoint Firewall-1 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

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Checkpoint Firewall-1
Published: 2000-11-14
Last modified: 2026-06-16

Description

Buffer overflow in Getkey in the protocol checker in the inter-module communication mechanism in Check Point VPN-1/FireWall-1 4.1 and earlier allows remote attackers to cause a denial of service.

Frequently asked questions

What is CVE-2000-0809?: Buffer overflow in Getkey in the protocol checker in the inter-module communication mechanism in Check Point VPN-1/FireWall-1 4.1 and earlier allows remote attackers to cause a denial of service.
How severe is CVE-2000-0809?: CVE-2000-0809 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2000-0809 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0809?: CVE-2000-0809 primarily affects Checkpoint Firewall-1. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2000-0809?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2000-0809 published?: CVE-2000-0809 was published on 2000-11-14 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:a:checkpoint:firewall-1:3.0:*:*:*:*:*:*:*
cpe:2.3:a:checkpoint:firewall-1:4.0:*:*:*:*:*:*:*
cpe:2.3:a:checkpoint:firewall-1:4.1:*:*:*:*:*:*:*

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