CVE-2011-4684

CVE-2011-4684 is a critical-severity vulnerability in Opera Opera Browser with a CVSS 2.0 base score of 10.0. 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-310.

Key facts

Description

Opera before 11.60 does not properly handle certificate revocation, which has unspecified impact and remote attack vectors related to "corner cases."

Frequently asked questions

What is CVE-2011-4684?
Opera before 11.60 does not properly handle certificate revocation, which has unspecified impact and remote attack vectors related to "corner cases."
How severe is CVE-2011-4684?
CVE-2011-4684 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2011-4684 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-4684?
CVE-2011-4684 primarily affects Opera Opera Browser. In total, 123 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-4684?
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-2011-4684 published?
CVE-2011-4684 was published on 2011-12-07 and last updated on 2026-06-16.

References

Affected products (123)

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