How severe is CVE-2005-0593?

CVE-2005-0593 has a CVSS 2.0 base score of 2.6, rated low severity.

Is CVE-2005-0593 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-2005-0593?

CVE-2005-0593 primarily affects Mozilla Firefox. In total, 31 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2005-0593?

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

When was CVE-2005-0593 published?

CVE-2005-0593 was published on 2005-03-04 and last updated on 2026-06-16.

CVE-2005-0593

CVE-2005-0593 is a low-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 2.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Low (CVSS 2.0 base score 2.6)
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Mozilla Firefox
Published: 2005-03-04
Last modified: 2026-06-16

Description

Firefox before 1.0.1 and Mozilla before 1.7.6 allows remote attackers to spoof the SSL "secure site" lock icon via (1) a web site that does not finish loading, which shows the lock of the previous site, (2) a non-HTTP server that uses SSL, which causes the lock to be displayed when the SSL handshake is completed, or (3) a URL that generates an HTTP 204 error, which updates the icon and location information but does not change the display of the original site.

Frequently asked questions

What is CVE-2005-0593?: Firefox before 1.0.1 and Mozilla before 1.7.6 allows remote attackers to spoof the SSL "secure site" lock icon via (1) a web site that does not finish loading, which shows the lock of the previous site, (2) a non-HTTP server that uses SSL, which causes the lock to be displayed when the SSL handshake is completed, or (3) a URL that generates an HTTP 204 error, which updates the icon and location information but does not change the display of the original site.
How severe is CVE-2005-0593?: CVE-2005-0593 has a CVSS 2.0 base score of 2.6, rated low severity.
Is CVE-2005-0593 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-2005-0593?: CVE-2005-0593 primarily affects Mozilla Firefox. In total, 31 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2005-0593?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2005-0593 published?: CVE-2005-0593 was published on 2005-03-04 and last updated on 2026-06-16.

References

Affected products (31)

cpe:2.3:a:mozilla:firefox:0.8:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:0.9:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:0.9:rc:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:0.9.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:0.9.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:0.9.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:0.10:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:0.10.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:1.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.4:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.4:alpha:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.4.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.5:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.5:alpha:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.5:rc1:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.5:rc2:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.5.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.6:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.6:alpha:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.6:beta:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.7:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.7:alpha:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.7:beta:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.7:rc1:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.7:rc2:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.7:rc3:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.7.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.7.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.7.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:mozilla:1.7.5:*:*:*:*:*:*:*

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