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Vulnerability record · CVE-2011-1824 · published 10 May 2011

CVE-2011-1824: Opera browser improper input validation vulnerability

Opera · Opera Browser

The VEGAOpBitmap::AddLine function in Opera before 10.61 does not properly initialize memory during processing of the SIZE attribute of a SELECT element, which allows remote attackers to trigger an invalid memory write operation, and consequently cause a denial of service (application crash) or possibly execute arbitrary code, via a large integer attribute value.

4.3 CVSS 2.0 Medium EPSS 5.9% · top 7.1% CWE-20 · Improper input validation
4.3CVSS 2.0 base score
5.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
18References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

The VEGAOpBitmap::AddLine function in Opera before 10.61 does not properly initialize memory during processing of the SIZE attribute of a SELECT element, which allows remote attackers to trigger an invalid memory write operation, and consequently cause a denial of service (application crash) or possibly execute arbitrary code, via a large integer attribute value.

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

Affected products

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

References

LinkTags
http://securityreason.com/securityalert/8244
http://www.kb.cert.org/vuls/id/778396 US Government Resource
http://www.opera.com/docs/changelogs/mac/1061/
http://www.opera.com/docs/changelogs/unix/1061/
http://www.opera.com/docs/changelogs/windows/1061/
http://www.securityfocus.com/archive/1/517914/100/0/threaded
http://www.securityfocus.com/bid/47764
http://www.toucan-system.com/advisories/tssa-2011-02.txt Exploit
https://exchange.xforce.ibmcloud.com/vulnerabilities/67338
http://securityreason.com/securityalert/8244
http://www.kb.cert.org/vuls/id/778396 US Government Resource
http://www.opera.com/docs/changelogs/mac/1061/
http://www.opera.com/docs/changelogs/unix/1061/
http://www.opera.com/docs/changelogs/windows/1061/
http://www.securityfocus.com/archive/1/517914/100/0/threaded
http://www.securityfocus.com/bid/47764
http://www.toucan-system.com/advisories/tssa-2011-02.txt Exploit
https://exchange.xforce.ibmcloud.com/vulnerabilities/67338

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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-2011-1824), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.