What’s Vulnerable › Vulnerabilities

CVE-2011-2640

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2011-07-01 · updated 2026-06-16
• Weakness: CWE-399

Description

Opera before 11.10 allows remote attackers to cause a denial of service (application crash) via an HTML document that has an empty parameter value for an embedded Java applet.

Affected products

• Opera Browser: through 11.10; 5.0, 5.0-beta2, 5.0-beta3, 5.0-beta4, 5.0-beta5, 5.0-beta6 (+110)

References

• http://www.opera.com/docs/changelogs/mac/1110/
• http://www.opera.com/docs/changelogs/unix/1110/
• http://www.opera.com/docs/changelogs/windows/1110/
• https://exchange.xforce.ibmcloud.com/vulnerabilities/68452
• http://www.opera.com/docs/changelogs/mac/1110/
• http://www.opera.com/docs/changelogs/unix/1110/
• http://www.opera.com/docs/changelogs/windows/1110/
• https://exchange.xforce.ibmcloud.com/vulnerabilities/68452

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