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Vulnerability record · CVE-2011-0682 · published 31 January 2011

CVE-2011-0682: Opera browser memory buffer overflow vulnerability

Opera · Opera Browser

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.

9.3 CVSS 2.0 High EPSS 5.6% · top 7.3% CWE-119 · Memory buffer overflow
9.3CVSS 2.0 base score
5.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
20References
16 Jun 2026Last modified by NVD

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.

AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://osvdb.org/70728
http://secunia.com/advisories/43023 Vendor Advisory
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/ Vendor Advisory
http://www.securityfocus.com/bid/46036
http://www.vupen.com/english/advisories/2011/0231 Vendor Advisory
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
http://osvdb.org/70728
http://secunia.com/advisories/43023 Vendor Advisory
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/ Vendor Advisory
http://www.securityfocus.com/bid/46036
http://www.vupen.com/english/advisories/2011/0231 Vendor Advisory
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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2013-3211Opera browser vulnerabilityUnspecified vulnerability in Opera before 12.15 has unknown impact and attack vectors, related to a "moderately severe issue."EPSS 1.7%10.0CVE-2012-4145Opera browser vulnerabilityUnspecified vulnerability in Opera before 12.01 on Windows and UNIX, and before 11.66 and 12.x before 12.01 on Mac OS X, has unknown impact and attac…EPSS 2.2%10.0CVE-2012-3559Opera browser vulnerabilityUnspecified vulnerability in Opera before 12.00 on Mac OS X has unknown impact and attack vectors, related to a "moderate severity issue."EPSS 1.4%10.0CVE-2012-3561Opera browser memory buffer overflow vulnerabilityOpera before 11.64 does not properly allocate memory for URL strings, which allows remote attackers to execute arbitrary code or cause a denial of se…EPSS 5.2%10.0CVE-2011-4683Opera browser vulnerabilityUnspecified vulnerability in Opera before 11.60 has unknown impact and attack vectors, related to a "moderately severe issue."EPSS 2.0%10.0CVE-2011-4684Opera browser vulnerabilityOpera before 11.60 does not properly handle certificate revocation, which has unspecified impact and remote attack vectors related to "corner cases."EPSS 5.7%10.0CVE-2011-2610Opera browser vulnerabilityUnspecified vulnerability in Opera before 11.50 has unknown impact and attack vectors, related to a "moderately severe issue."EPSS 2.1%10.0CVE-2011-2628Opera browser improper input validation vulnerabilityOpera before 11.11 does not properly implement FRAMESET elements, which allows remote attackers to execute arbitrary code or cause a denial of servic…EPSS 13%

Source: NIST National Vulnerability Database (record CVE-2011-0682), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.