CVE-2011-0686

CVE-2011-0686 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% (84th percentile)
• Actively exploited: Not listed in CISA KEV
• Affected product: Opera Opera Browser
• Published: 2011-01-31
• Last modified: 2026-06-16

Description

Unspecified vulnerability in Opera before 11.01 allows remote attackers to cause a denial of service (application crash) via unknown content on a web page, as demonstrated by vkontakte.ru.

Frequently asked questions

What is CVE-2011-0686?

Unspecified vulnerability in Opera before 11.01 allows remote attackers to cause a denial of service (application crash) via unknown content on a web page, as demonstrated by vkontakte.ru.

How severe is CVE-2011-0686?

CVE-2011-0686 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2011-0686 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-0686?

CVE-2011-0686 primarily affects Opera Opera Browser. In total, 113 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-0686?

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

When was CVE-2011-0686 published?

CVE-2011-0686 was published on 2011-01-31 and last updated on 2026-06-16.

References

• http://osvdb.org/70732
• http://secunia.com/advisories/43023
• http://www.opera.com/docs/changelogs/mac/1101/
• http://www.opera.com/docs/changelogs/unix/1101/
• http://www.opera.com/docs/changelogs/windows/1101/
• http://www.securityfocus.com/bid/46036
• http://www.vupen.com/english/advisories/2011/0231
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11878

Affected products (113)

• cpe:2.3:a:opera:opera_browser:*:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:5.0:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:5.0:beta2:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:5.0:beta3:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:5.0:beta4:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:5.0:beta5:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:5.0:beta6:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:5.0:beta7:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:5.0:beta8:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:5.02:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:5.10:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:5.11:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:5.12:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:6.0:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:6.0:beta1:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:6.0:beta2:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:6.0:tp1:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:6.0:tp2:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:6.0:tp3:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:6.1:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:6.01:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:6.1:beta1:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:6.02:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:6.03:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:6.04:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:6.05:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:6.06:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:6.11:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:6.12:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:7.0:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:7.0:beta1:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:7.0:beta1_v2:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:7.0:beta2:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:7.01:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:7.02:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:7.03:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:7.10:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:7.10:beta1:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:7.11:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera_browser:7.11:beta2:*:*:*:*:*:*

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