How severe is CVE-2005-0456?

CVE-2005-0456 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2005-0456 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-0456?

CVE-2005-0456 affects Opera Opera Browser. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2005-0456?

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

When was CVE-2005-0456 published?

CVE-2005-0456 was published on 2005-01-12 and last updated on 2026-06-16.

CVE-2005-0456

CVE-2005-0456 is a medium-severity vulnerability in Opera Opera Browser 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: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Opera Opera Browser
Published: 2005-01-12
Last modified: 2026-06-16

Description

Opera 7.54 and earlier does not properly validate base64 encoded binary data in a data: (RFC 2397) URL, which causes the URL to be obscured in a download dialog, which may allow remote attackers to trick users into executing arbitrary code.

Frequently asked questions

What is CVE-2005-0456?: Opera 7.54 and earlier does not properly validate base64 encoded binary data in a data: (RFC 2397) URL, which causes the URL to be obscured in a download dialog, which may allow remote attackers to trick users into executing arbitrary code.
How severe is CVE-2005-0456?: CVE-2005-0456 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2005-0456 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-0456?: CVE-2005-0456 affects Opera Opera Browser. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2005-0456?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2005-0456 published?: CVE-2005-0456 was published on 2005-01-12 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:opera:opera_browser:*:*:*:*:*:*:*:*

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