CVE-2012-3291

CVE-2012-3291 is a high-severity vulnerability in Infradead Openconnect with a CVSS 2.0 base score of 7.8. 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-119.

Key facts

Description

Heap-based buffer overflow in OpenConnect 3.18 allows remote servers to cause a denial of service via a crafted greeting banner.

Frequently asked questions

What is CVE-2012-3291?
Heap-based buffer overflow in OpenConnect 3.18 allows remote servers to cause a denial of service via a crafted greeting banner.
How severe is CVE-2012-3291?
CVE-2012-3291 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2012-3291 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-3291?
CVE-2012-3291 primarily affects Infradead Openconnect. In total, 27 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-3291?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2012-3291 published?
CVE-2012-3291 was published on 2012-06-07 and last updated on 2026-06-16.

References

Affected products (27)

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