How severe is CVE-2000-1187?

CVE-2000-1187 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2000-1187 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2000-1187?

CVE-2000-1187 primarily affects Netscape Communicator. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2000-1187?

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-2000-1187 published?

CVE-2000-1187 was published on 2001-01-09 and last updated on 2026-06-16.

CVE-2000-1187

CVE-2000-1187 is a high-severity vulnerability in Netscape Communicator 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: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Netscape Communicator
Published: 2001-01-09
Last modified: 2026-06-16

Description

Buffer overflow in the HTML parser for Netscape 4.75 and earlier allows remote attackers to execute arbitrary commands via a long password value in a form field.

Frequently asked questions

What is CVE-2000-1187?: Buffer overflow in the HTML parser for Netscape 4.75 and earlier allows remote attackers to execute arbitrary commands via a long password value in a form field.
How severe is CVE-2000-1187?: CVE-2000-1187 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2000-1187 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-1187?: CVE-2000-1187 primarily affects Netscape Communicator. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2000-1187?: 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-2000-1187 published?: CVE-2000-1187 was published on 2001-01-09 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:netscape:communicator:*:*:*:*:*:*:*:*
cpe:2.3:a:netscape:navigator:*:*:*:*:*:*:*:*

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