How severe is CVE-2003-0355?

CVE-2003-0355 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2003-0355 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2003-0355?

CVE-2003-0355 primarily affects Apple Safari. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2003-0355?

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

When was CVE-2003-0355 published?

CVE-2003-0355 was published on 2003-06-09 and last updated on 2026-06-16.

CVE-2003-0355

CVE-2003-0355 is a medium-severity vulnerability in Apple Safari with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Apple Safari
Published: 2003-06-09
Last modified: 2026-06-16

Description

Safari 1.0 Beta 2 (v73) and earlier does not validate the Common Name (CN) field for X.509 Certificates, which could allow remote attackers to spoof certificates.

Frequently asked questions

What is CVE-2003-0355?: Safari 1.0 Beta 2 (v73) and earlier does not validate the Common Name (CN) field for X.509 Certificates, which could allow remote attackers to spoof certificates.
How severe is CVE-2003-0355?: CVE-2003-0355 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2003-0355 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-0355?: CVE-2003-0355 primarily affects Apple Safari. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2003-0355?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2003-0355 published?: CVE-2003-0355 was published on 2003-06-09 and last updated on 2026-06-16.

References

http://www.securityfocus.com/archive/1/320707

Affected products (2)

cpe:2.3:a:apple:safari:1.0:*:*:*:*:*:*:*
cpe:2.3:a:kde:konqueror_embedded:*:*:*:*:*:*:*:*

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