CVE-2012-1836

CVE-2012-1836 is a high-severity vulnerability in Inspircd with a CVSS 2.0 base score of 7.5. 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 dns.cpp in InspIRCd 2.0.5 might allow remote attackers to execute arbitrary code via a crafted DNS query that uses compression.

Frequently asked questions

What is CVE-2012-1836?
Heap-based buffer overflow in dns.cpp in InspIRCd 2.0.5 might allow remote attackers to execute arbitrary code via a crafted DNS query that uses compression.
How severe is CVE-2012-1836?
CVE-2012-1836 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2012-1836 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-1836?
CVE-2012-1836 affects Inspircd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2012-1836?
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-2012-1836 published?
CVE-2012-1836 was published on 2012-03-22 and last updated on 2026-06-16.

References

Affected products (1)

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