CVE-2015-8605

ISC DHCP 4.x before 4.1-ESV-R12-P1, 4.2.x, and 4.3.x before 4.3.3-P1 allows remote attackers to cause a denial of service (application crash) via an invalid length field in a UDP IPv4 packet.

Published: 2016-01-14 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-8605 is rated Moderate Risk (57.5/100): CVSS Medium severity, with high exploitation likelihood (EPSS 43.44%, 97th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-8605

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-07 46.00% 43.44% -2.56%
2 2025-12-11 49.97% 46.00% -3.97%
3 2025-10-03 — 49.97% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-8605

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.0 MEDIUM
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]
5.7 2.0 MEDIUM
AV:A/AC:M/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:A)
Requires access to an adjacent network segment.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 5.5 6.9 [email protected]

Weakness enumeration for CVE-2015-8605

OS Trackers for CVE-2015-8605

vendor priority summary link
debian not yet assigned CVE-2015-8605 not yet assigned priority: Debian including 1 source packages (isc-dhcp), 4 status rows across 4 suites (bookworm, bullseye, sid, trixie): resolved 4. https://security-tracker.debian.org/tracker/CVE-2015-8605
redhat medium — https://access.redhat.com/security/cve/CVE-2015-8605
suse medium — https://www.suse.com/security/cve/CVE-2015-8605/
ubuntu medium CVE-2015-8605 medium priority: Ubuntu including 1 source packages (isc-dhcp), 5 status rows across 5 suites (precise, trusty, upstream, vivid, wily): released 5. https://ubuntu.com/security/CVE-2015-8605

Affected software / configurations for CVE-2015-8605

Vendor Product Version Raw CPE
sophos unified_threat_management_up2date <= 9.318 cpe:2.3:a:sophos:unified_threat_management_up2date:*:*:*:*:*:*:*:*
sophos unified_threat_management_up2date <= 9.353 cpe:2.3:a:sophos:unified_threat_management_up2date:*:*:*:*:*:*:*:*
isc dhcp 4.0.0 cpe:2.3:a:isc:dhcp:4.0.0:*:*:*:*:*:*:*
isc dhcp 4.0.1 cpe:2.3:a:isc:dhcp:4.0.1:*:*:*:*:*:*:*
isc dhcp 4.0.2 cpe:2.3:a:isc:dhcp:4.0.2:-:*:*:*:*:*:*
isc dhcp 4.0.2 cpe:2.3:a:isc:dhcp:4.0.2:p1:*:*:*:*:*:*
isc dhcp 4.0.3 cpe:2.3:a:isc:dhcp:4.0.3:-:*:*:*:*:*:*
isc dhcp 4.0.3 cpe:2.3:a:isc:dhcp:4.0.3:rc1:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:-:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r1:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r10:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r10_b1:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r11_b1:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r11_rc1:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r11_rc2:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r12:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r12_b1:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r2:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r3:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r3_b1:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r4:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r5:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r5_b1:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r5_rc1:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r5_rc2:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r6:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r7:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r8:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r8_b1:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r8_rc1:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r9:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r9_b1:*:*:*:*:*:*
isc dhcp 4.1-esv cpe:2.3:a:isc:dhcp:4.1-esv:r9_rc1:*:*:*:*:*:*
isc dhcp 4.1.0 cpe:2.3:a:isc:dhcp:4.1.0:-:*:*:*:*:*:*
isc dhcp 4.1.1 cpe:2.3:a:isc:dhcp:4.1.1:-:*:*:*:*:*:*
isc dhcp 4.1.1 cpe:2.3:a:isc:dhcp:4.1.1:p1:*:*:*:*:*:*
isc dhcp 4.1.2 cpe:2.3:a:isc:dhcp:4.1.2:-:*:*:*:*:*:*
isc dhcp 4.1.2 cpe:2.3:a:isc:dhcp:4.1.2:b1:*:*:*:*:*:*
isc dhcp 4.1.2 cpe:2.3:a:isc:dhcp:4.1.2:p1:*:*:*:*:*:*
isc dhcp 4.1.2 cpe:2.3:a:isc:dhcp:4.1.2:rc1:*:*:*:*:*:*
isc dhcp 4.2.0 cpe:2.3:a:isc:dhcp:4.2.0:-:*:*:*:*:*:*
isc dhcp 4.2.0 cpe:2.3:a:isc:dhcp:4.2.0:p1:*:*:*:*:*:*
isc dhcp 4.2.0 cpe:2.3:a:isc:dhcp:4.2.0:p2:*:*:*:*:*:*
isc dhcp 4.2.1 cpe:2.3:a:isc:dhcp:4.2.1:-:*:*:*:*:*:*
isc dhcp 4.2.1 cpe:2.3:a:isc:dhcp:4.2.1:b1:*:*:*:*:*:*
isc dhcp 4.2.1 cpe:2.3:a:isc:dhcp:4.2.1:p1:*:*:*:*:*:*
isc dhcp 4.2.1 cpe:2.3:a:isc:dhcp:4.2.1:rc1:*:*:*:*:*:*
isc dhcp 4.2.2 cpe:2.3:a:isc:dhcp:4.2.2:-:*:*:*:*:*:*
isc dhcp 4.2.2 cpe:2.3:a:isc:dhcp:4.2.2:b1:*:*:*:*:*:*
isc dhcp 4.2.2 cpe:2.3:a:isc:dhcp:4.2.2:rc1:*:*:*:*:*:*
isc dhcp 4.2.3 cpe:2.3:a:isc:dhcp:4.2.3:-:*:*:*:*:*:*
isc dhcp 4.2.3 cpe:2.3:a:isc:dhcp:4.2.3:p1:*:*:*:*:*:*
isc dhcp 4.2.3 cpe:2.3:a:isc:dhcp:4.2.3:p2:*:*:*:*:*:*
isc dhcp 4.2.4 cpe:2.3:a:isc:dhcp:4.2.4:-:*:*:*:*:*:*
isc dhcp 4.2.4 cpe:2.3:a:isc:dhcp:4.2.4:b1:*:*:*:*:*:*
isc dhcp 4.2.4 cpe:2.3:a:isc:dhcp:4.2.4:p1:*:*:*:*:*:*
isc dhcp 4.2.4 cpe:2.3:a:isc:dhcp:4.2.4:p2:*:*:*:*:*:*
isc dhcp 4.2.4 cpe:2.3:a:isc:dhcp:4.2.4:rc1:*:*:*:*:*:*
isc dhcp 4.2.4 cpe:2.3:a:isc:dhcp:4.2.4:rc2:*:*:*:*:*:*
isc dhcp 4.2.5 cpe:2.3:a:isc:dhcp:4.2.5:-:*:*:*:*:*:*
isc dhcp 4.2.5 cpe:2.3:a:isc:dhcp:4.2.5:b1:*:*:*:*:*:*
isc dhcp 4.2.5 cpe:2.3:a:isc:dhcp:4.2.5:p1:*:*:*:*:*:*
isc dhcp 4.2.5 cpe:2.3:a:isc:dhcp:4.2.5:rc1:*:*:*:*:*:*
isc dhcp 4.2.6 cpe:2.3:a:isc:dhcp:4.2.6:-:*:*:*:*:*:*
isc dhcp 4.2.6 cpe:2.3:a:isc:dhcp:4.2.6:b1:*:*:*:*:*:*
isc dhcp 4.2.6 cpe:2.3:a:isc:dhcp:4.2.6:rc1:*:*:*:*:*:*
isc dhcp 4.2.7 cpe:2.3:a:isc:dhcp:4.2.7:*:*:*:*:*:*:*
isc dhcp 4.2.7 cpe:2.3:a:isc:dhcp:4.2.7:b1:*:*:*:*:*:*
isc dhcp 4.2.7 cpe:2.3:a:isc:dhcp:4.2.7:rc1:*:*:*:*:*:*
isc dhcp 4.2.8 cpe:2.3:a:isc:dhcp:4.2.8:*:*:*:*:*:*:*
isc dhcp 4.2.8 cpe:2.3:a:isc:dhcp:4.2.8:b1:*:*:*:*:*:*
isc dhcp 4.2.8 cpe:2.3:a:isc:dhcp:4.2.8:rc1:*:*:*:*:*:*
isc dhcp 4.2.8 cpe:2.3:a:isc:dhcp:4.2.8:rc2:*:*:*:*:*:*
isc dhcp 4.3.0 cpe:2.3:a:isc:dhcp:4.3.0:*:*:*:*:*:*:*
isc dhcp 4.3.0 cpe:2.3:a:isc:dhcp:4.3.0:a1:*:*:*:*:*:*
isc dhcp 4.3.0 cpe:2.3:a:isc:dhcp:4.3.0:b1:*:*:*:*:*:*
isc dhcp 4.3.0 cpe:2.3:a:isc:dhcp:4.3.0:rc1:*:*:*:*:*:*
isc dhcp 4.3.1 cpe:2.3:a:isc:dhcp:4.3.1:*:*:*:*:*:*:*
isc dhcp 4.3.1 cpe:2.3:a:isc:dhcp:4.3.1:b1:*:*:*:*:*:*
isc dhcp 4.3.1 cpe:2.3:a:isc:dhcp:4.3.1:rc1:*:*:*:*:*:*

References for CVE-2015-8605

URL Tags
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175594.html Mailing List Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176031.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2016-02/msg00162.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2016-02/msg00168.html Mailing List Third Party Advisory
http://www.debian.org/security/2016/dsa-3442 Third Party Advisory
http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html Third Party Advisory
http://www.securityfocus.com/bid/80703 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1034657 Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/USN-2868-1 Third Party Advisory
https://blogs.sophos.com/2016/02/17/utm-up2date-9-354-released/ Third Party Advisory
https://blogs.sophos.com/2016/02/29/utm-up2date-9-319-released/ Third Party Advisory
https://kb.isc.org/article/AA-01334 Vendor Advisory
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