CVE-2011-2749

CVE-2011-2749 is a high-severity vulnerability in Isc Dhcp with a CVSS 2.0 base score of 7.8. Its EPSS exploit-prediction score of 39% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

Description

The server in ISC DHCP 3.x and 4.x before 4.2.2, 3.1-ESV before 3.1-ESV-R3, and 4.1-ESV before 4.1-ESV-R3 allows remote attackers to cause a denial of service (daemon exit) via a crafted BOOTP packet.

Frequently asked questions

What is CVE-2011-2749?
The server in ISC DHCP 3.x and 4.x before 4.2.2, 3.1-ESV before 3.1-ESV-R3, and 4.1-ESV before 4.1-ESV-R3 allows remote attackers to cause a denial of service (daemon exit) via a crafted BOOTP packet.
How severe is CVE-2011-2749?
CVE-2011-2749 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2011-2749 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 39% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-2749?
CVE-2011-2749 primarily affects Isc Dhcp. In total, 92 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-2749?
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-2011-2749 published?
CVE-2011-2749 was published on 2011-08-15 and last updated on 2026-06-16.

References

Affected products (92)

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