How severe is CVE-2000-0807?

CVE-2000-0807 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2000-0807 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2000-0807?

CVE-2000-0807 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-2000-0807?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2000-0807 published?

CVE-2000-0807 was published on 2000-11-14 and last updated on 2026-06-16.

CVE-2000-0807

CVE-2000-0807 is a high-severity vulnerability in Checkpoint Firewall-1 with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Checkpoint Firewall-1
Published: 2000-11-14
Last modified: 2026-06-16

Description

The OPSEC communications authentication mechanism (fwn1) in Check Point VPN-1/FireWall-1 4.1 and earlier allows remote attackers to spoof connections, aka the "OPSEC Authentication Vulnerability."

Frequently asked questions

What is CVE-2000-0807?: The OPSEC communications authentication mechanism (fwn1) in Check Point VPN-1/FireWall-1 4.1 and earlier allows remote attackers to spoof connections, aka the "OPSEC Authentication Vulnerability."
How severe is CVE-2000-0807?: CVE-2000-0807 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2000-0807 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0807?: CVE-2000-0807 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-2000-0807?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2000-0807 published?: CVE-2000-0807 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:*:*:*:*:*:*:*

More vulnerabilities in Checkpoint Firewall-1

CVE-2004-0469 — Critical (CVSS 10.0): Buffer overflow in the ISAKMP functionality for Check Point VPN-1 and FireWall-1 NG products, before VPN-1/FireWall-1…
CVE-2004-0040 — Critical (CVSS 10.0): Stack-based buffer overflow in Check Point VPN-1 Server 4.1 through 4.1 SP6 and Check Point SecuRemote/SecureClient 4.1…
CVE-2004-0039 — Critical (CVSS 10.0): Multiple format string vulnerabilities in HTTP Application Intelligence (AI) component in Check Point Firewall-1 NG-AI…
CVE-2005-3673 — High (CVSS 7.8): The Internet Key Exchange version 1 (IKEv1) implementation in Check Point products allows remote attackers to cause a…
CVE-2004-2679 — High (CVSS 7.8): Check Point Firewall-1 4.1 up to NG AI R55 allows remote attackers to obtain potentially sensitive information by…
CVE-2004-0079 — High (CVSS 7.5): The do_change_cipher_spec function in OpenSSL 0.9.6c to 0.9.6k, and 0.9.7a to 0.9.7c, allows remote attackers to cause…

All CVEs affecting Checkpoint Firewall-1 →