How severe is CVE-2002-1778?

CVE-2002-1778 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2002-1778 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2002-1778?

CVE-2002-1778 affects Symantec Norton Personal Firewall. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2002-1778?

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-2002-1778 published?

CVE-2002-1778 was published on 2002-12-31 and last updated on 2026-06-16.

CVE-2002-1778

CVE-2002-1778 is a high-severity vulnerability in Symantec Norton Personal Firewall 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% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Symantec Norton Personal Firewall
Published: 2002-12-31
Last modified: 2026-06-16

Description

Symantec Norton Personal Firewall 2002 allows remote attackers to bypass the portscan protection by using a (1) SYN/FIN, (2) SYN/FIN/URG, (3) SYN/FIN/PUSH, or (4) SYN/FIN/URG/PUSH scan.

Frequently asked questions

What is CVE-2002-1778?: Symantec Norton Personal Firewall 2002 allows remote attackers to bypass the portscan protection by using a (1) SYN/FIN, (2) SYN/FIN/URG, (3) SYN/FIN/PUSH, or (4) SYN/FIN/URG/PUSH scan.
How severe is CVE-2002-1778?: CVE-2002-1778 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2002-1778 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2002-1778?: CVE-2002-1778 affects Symantec Norton Personal Firewall. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2002-1778?: 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-2002-1778 published?: CVE-2002-1778 was published on 2002-12-31 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:symantec:norton_personal_firewall:2002:*:*:*:*:*:*:*

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