How severe is CVE-2017-3144?

CVE-2017-3144 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-3144 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 73% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-3144?

CVE-2017-3144 primarily affects Isc Dhcp. In total, 50 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-3144?

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-2017-3144 published?

CVE-2017-3144 was published on 2019-01-16 and last updated on 2026-06-17.

CVE-2017-3144

CVE-2017-3144 is a high-severity vulnerability in Isc Dhcp with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 73% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-400.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 73% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Isc Dhcp
Published: 2019-01-16
Last modified: 2026-06-17

Description

A vulnerability stemming from failure to properly clean up closed OMAPI connections can lead to exhaustion of the pool of socket descriptors available to the DHCP server. Affects ISC DHCP 4.1.0 to 4.1-ESV-R15, 4.2.0 to 4.2.8, 4.3.0 to 4.3.6. Older versions may also be affected but are well beyond their end-of-life (EOL). Releases prior to 4.1.0 have not been tested.

Frequently asked questions

What is CVE-2017-3144?: A vulnerability stemming from failure to properly clean up closed OMAPI connections can lead to exhaustion of the pool of socket descriptors available to the DHCP server. Affects ISC DHCP 4.1.0 to 4.1-ESV-R15, 4.2.0 to 4.2.8, 4.3.0 to 4.3.6. Older versions may also be affected but are well beyond their end-of-life (EOL). Releases prior to 4.1.0 have not been tested.
How severe is CVE-2017-3144?: CVE-2017-3144 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-3144 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 73% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-3144?: CVE-2017-3144 primarily affects Isc Dhcp. In total, 50 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-3144?: 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-2017-3144 published?: CVE-2017-3144 was published on 2019-01-16 and last updated on 2026-06-17.

References

Affected products (50)

cpe:2.3:a:isc:dhcp:*:*:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:-:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r1:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r10:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r10_b1:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r10_rc1:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r11:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r11_b1:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r11_rc1:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r11_rc2:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r12:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r12_b1:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r12_p1:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r13:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r13_b1:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r14:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r14_b1:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r15:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r2:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r3:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r3_b1:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r4:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r5:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r5_b1:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r5_rc1:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r5_rc2:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r6:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r7:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r8:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r8_b1:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r8_rc1:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r9:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r9_b1:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1-esv:r9_rc1:*:*:*:*:*:*
cpe:2.3:a:isc:dhcp:4.1.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*

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CVE-2011-2749 — High (CVSS 7.8): 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…
CVE-2011-2748 — High (CVSS 7.8): 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…
CVE-2011-0413 — High (CVSS 7.8): The DHCPv6 server in ISC DHCP 4.0.x and 4.1.x before 4.1.2-P1, 4.0-ESV and 4.1-ESV before 4.1-ESV-R1, and 4.2.x before…
CVE-2018-5732 — High (CVSS 7.5): Failure to properly bounds-check a buffer used for processing DHCP options allows a malicious server (or an entity…
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