CVE-2011-0682

CVE-2011-0682 is a critical-severity vulnerability in Opera Opera Browser with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

• Severity: Critical (CVSS 2.0 base score 9.3)
• EPSS exploit prediction: 6% (92nd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: Opera Opera Browser
• Published: 2011-01-31
• Last modified: 2026-06-16

Description

Integer truncation error in opera.dll in Opera before 11.01 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via an HTML form with a select element that contains a large number of children.

Frequently asked questions

What is CVE-2011-0682?

Integer truncation error in opera.dll in Opera before 11.01 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via an HTML form with a select element that contains a large number of children.

How severe is CVE-2011-0682?

CVE-2011-0682 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2011-0682 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-0682?

CVE-2011-0682 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-2011-0682?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2011-0682 published?

CVE-2011-0682 was published on 2011-01-31 and last updated on 2026-06-16.

References

• http://osvdb.org/70728
• 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.opera.com/support/kb/view/982/
• 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%3A12636
• https://www.alternativ-testing.fr/blog/index.php?post/2011/%5BCVE-XXXX-XXXX%5D-Opera-11-Integer-Truncation-Vulnerability

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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