How severe is CVE-2004-2755?

CVE-2004-2755 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2004-2755 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-2755?

CVE-2004-2755 primarily affects Symantec Web Security. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2004-2755?

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

When was CVE-2004-2755 published?

CVE-2004-2755 was published on 2004-12-31 and last updated on 2026-06-16.

CVE-2004-2755

CVE-2004-2755 is a medium-severity vulnerability in Symantec Web Security with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Symantec Web Security
Published: 2004-12-31
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in Symantec Web Security 2.5, 3.0.0, and 3.0.1 before build 62 allows remote attackers to inject arbitrary web script or HTML via the query string in blocked URLs that are listed in (1) error or (2) block page messages.

Frequently asked questions

What is CVE-2004-2755?: Cross-site scripting (XSS) vulnerability in Symantec Web Security 2.5, 3.0.0, and 3.0.1 before build 62 allows remote attackers to inject arbitrary web script or HTML via the query string in blocked URLs that are listed in (1) error or (2) block page messages.
How severe is CVE-2004-2755?: CVE-2004-2755 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2004-2755 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-2755?: CVE-2004-2755 primarily affects Symantec Web Security. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2004-2755?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2004-2755 published?: CVE-2004-2755 was published on 2004-12-31 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:a:symantec:web_security:2.5:*:*:*:*:*:*:*
cpe:2.3:a:symantec:web_security:3.0:*:*:*:*:*:*:*
cpe:2.3:a:symantec:web_security:3.0.1:*:*:*:*:*:*:*

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