ISC DHCP vulnerabilities: known CVEs & security history
ISC · Network / DHCP · 25 tracked CVEs · 0 actively exploited · updated June 2026 · what is a CVE? →
This is the full list of known vulnerabilities (CVEs) across all ISC DHCP release lines — 25 in total. A CVE here doesn't mean your version is affected — check ISC DHCP's current status and the safe version to run.
Known ISC DHCP CVEs
Actively-exploited and most-severe first. Open any CVE for full details.
| CVE | Severity | CVSS | EPSS | Year |
|---|---|---|---|---|
| CVE-2009-0692 | high | 10 | 26% | 2009 |
| CVE-2011-2749 | high | 7.8 | 39% | 2011 |
| CVE-2011-2748 | high | 7.8 | 39% | 2011 |
| CVE-2011-0413 | high | 7.8 | 33% | 2011 |
| CVE-2018-5732 | high | 7.5 | 5% | 2019 |
| CVE-2018-5733 | high | 7.5 | 20% | 2019 |
| CVE-2017-3144 | high | 7.5 | 73% | 2019 |
| CVE-2011-0997 | high | 7.5 | 84% | 2011 |
| CVE-2021-25217 | high | 7.4 | 6% | 2021 |
| CVE-2012-3955 | high | 7.1 | 22% | 2012 |
| CVE-2009-1893 | medium | 6.9 | 1% | 2009 |
| CVE-2022-2929 | medium | 6.5 | 1% | 2022 |
| CVE-2022-2928 | medium | 6.5 | 1% | 2022 |
| CVE-2015-8605 | medium | 6.5 | 76% | 2016 |
| CVE-2012-3571 | medium | 6.1 | 13% | 2012 |
| CVE-2011-4868 | medium | 6.1 | 4% | 2012 |
| CVE-2016-2774 | medium | 5.9 | 74% | 2016 |
| CVE-2012-3570 | medium | 5.7 | 3% | 2012 |
| CVE-2011-4539 | medium | 5 | 15% | 2011 |
| CVE-2010-3616 | medium | 5 | 8% | 2010 |
| CVE-2010-2156 | medium | 5 | 76% | 2010 |
| CVE-2009-1892 | medium | 5 | 9% | 2009 |
| CVE-2013-2494 | medium | 4.9 | 1% | 2013 |
| CVE-2010-3611 | medium | 4.3 | 9% | 2010 |
| CVE-2012-3954 | low | 3.3 | 4% | 2012 |
Is my ISC DHCP version affected?
The list above spans every release. To know whether your version is affected — and the minimum safe version to upgrade to — check it directly.
Check your ISC DHCP version → · Monitor ISC DHCP for new CVEs →
ISC DHCP vulnerabilities — frequently asked
How many known vulnerabilities does ISC DHCP have?
IsItPatched tracks 25 CVEs for ISC DHCP. 0 are critical-severity and 10 high-severity. These span every release line — what matters is whether the version you run is affected.
Does ISC DHCP have any actively-exploited vulnerabilities?
None of ISC DHCP's tracked CVEs are currently in CISA's KEV catalog — but new ones can be added at any time, so keep your version current.
What is the most severe ISC DHCP vulnerability?
Among tracked issues, CVE-2009-0692 (HIGH, CVSS 10) ranks highest — a Memory corruption weakness.
Is ISC DHCP safe to use?
It depends on the version. The latest supported ISC DHCP release clears the known issues; older versions may still be affected. Check the exact version you run for a verdict.
CVE data aggregated from NVD, CISA KEV and EPSS (FIRST.org). Related: ISC DHCP security status · ISC DHCP end-of-life · actively-exploited CVEs. Always verify against ISC's advisories — see our disclaimer.