CVE-2009-3831

Severity: critical (CVSS 9.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-10-30 · updated 2026-06-16
Weakness: CWE-787

Description

Opera before 10.01 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted domain name.

Affected products

Opera Browser: before 10.01 — fixed in 10.01

How to fix

Upgrade to a fixed version: Opera Browser 10.01. Check the vendor advisory for mitigations.

References

http://secunia.com/advisories/37182
http://www.opera.com/docs/changelogs/mac/1001/
http://www.opera.com/docs/changelogs/unix/1001/
http://www.opera.com/docs/changelogs/windows/1001/
http://www.opera.com/support/kb/view/938/
http://www.osvdb.org/59357
http://www.securityfocus.com/bid/36850
http://www.vupen.com/english/advisories/2009/3073
https://exchange.xforce.ibmcloud.com/vulnerabilities/54020
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6574
http://secunia.com/advisories/37182
http://www.opera.com/docs/changelogs/mac/1001/

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