How severe is CVE-2005-4718?

CVE-2005-4718 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2005-4718 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-4718?

CVE-2005-4718 affects Opera Opera Browser. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2005-4718?

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

When was CVE-2005-4718 published?

CVE-2005-4718 was published on 2005-12-31 and last updated on 2026-06-16.

CVE-2005-4718

CVE-2005-4718 is a medium-severity vulnerability in Opera Opera Browser with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 10% places it in the 95th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 10% (95th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Opera Opera Browser
Published: 2005-12-31
Last modified: 2026-06-16

Description

Opera 8.02 and earlier allows remote attackers to cause a denial of service (client crash) via (1) a crafted HTML file with a "content: url(0);" style attribute, a "bodyA" tag, a long string, and a "u" tag with a long attribute, as demonstrated by opera.html; and (2) a BGSOUND element with a "margin:-99;" STYLE attribute.

Frequently asked questions

What is CVE-2005-4718?: Opera 8.02 and earlier allows remote attackers to cause a denial of service (client crash) via (1) a crafted HTML file with a "content: url(0);" style attribute, a "bodyA" tag, a long string, and a "u" tag with a long attribute, as demonstrated by opera.html; and (2) a BGSOUND element with a "margin:-99;" STYLE attribute.
How severe is CVE-2005-4718?: CVE-2005-4718 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2005-4718 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-4718?: CVE-2005-4718 affects Opera Opera Browser. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2005-4718?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2005-4718 published?: CVE-2005-4718 was published on 2005-12-31 and last updated on 2026-06-16.

References

Affected products (1)

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

More vulnerabilities in Opera Opera Browser

CVE-2013-3211 — Critical (CVSS 10.0): Unspecified vulnerability in Opera before 12.15 has unknown impact and attack vectors, related to a "moderately severe…
CVE-2012-4145 — Critical (CVSS 10.0): Unspecified vulnerability in Opera before 12.01 on Windows and UNIX, and before 11.66 and 12.x before 12.01 on Mac OS…
CVE-2012-3561 — Critical (CVSS 10.0): Opera before 11.64 does not properly allocate memory for URL strings, which allows remote attackers to execute…
CVE-2012-3559 — Critical (CVSS 10.0): Unspecified vulnerability in Opera before 12.00 on Mac OS X has unknown impact and attack vectors, related to a…
CVE-2011-4684 — Critical (CVSS 10.0): Opera before 11.60 does not properly handle certificate revocation, which has unspecified impact and remote attack…
CVE-2011-4683 — Critical (CVSS 10.0): Unspecified vulnerability in Opera before 11.60 has unknown impact and attack vectors, related to a "moderately severe…

All CVEs affecting Opera Opera Browser →