How severe is CVE-2002-0593?

CVE-2002-0593 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2002-0593 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2002-0593?

CVE-2002-0593 primarily affects Mozilla. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2002-0593?

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-2002-0593 published?

CVE-2002-0593 was published on 2002-06-18 and last updated on 2026-06-16.

CVE-2002-0593

CVE-2002-0593 is a high-severity vulnerability in Mozilla 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: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Mozilla
Published: 2002-06-18
Last modified: 2026-06-16

Description

Buffer overflow in Netscape 6 and Mozilla 1.0 RC1 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long channel name in an IRC URI.

Frequently asked questions

What is CVE-2002-0593?: Buffer overflow in Netscape 6 and Mozilla 1.0 RC1 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long channel name in an IRC URI.
How severe is CVE-2002-0593?: CVE-2002-0593 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2002-0593 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2002-0593?: CVE-2002-0593 primarily affects Mozilla. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2002-0593?: 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-2002-0593 published?: CVE-2002-0593 was published on 2002-06-18 and last updated on 2026-06-16.

References

Affected products (5)

cpe:2.3:a:mozilla:mozilla:0.9.9:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.0:rc1:*:*:*:*:*:*
cpe:2.3:a:netscape:communicator:6.1:*:*:*:*:*:*:*
cpe:2.3:a:netscape:navigator:6.0:*:*:*:*:*:*:*
cpe:2.3:a:netscape:navigator:6.01:*:*:*:*:*:*:*

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