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NVD / CVE Program· CNA mitre

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…

MediumCVSS 6.5 · v3.0—No exploit Fix available

Noroxi assessment

Priority: Plan (action score 51/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 82.7% (FIRST EPSS); higher than 99.6% of all records.
  • Someone on the same network segment can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: isc-dhcp (Debian:12) 4.3.3-7; isc-dhcp (Debian:6.0) 4.1.1-P1-15+squeeze9, 4.1.1-P1-15+squeeze10; isc-dhcp (Debian:7) 4.2.2.dfsg.1-5+deb70u8.

Add it to your regular patch cycle. Upgrade to isc-dhcp (Debian:12) 4.3.3-7; isc-dhcp (Debian:6.0) 4.1.1-P1-15+squeeze9, 4.1.1-P1-15+squeeze10; isc-dhcp (Debian:7) 4.2.2.dfsg.1-5+deb70u8 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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
Jan 14, 2016
Updated
Jun 16, 2026
EPSS
82.7% · 99th percentile

Report tools

JSON

Action score

51

Plan

Add it to your regular patch cycle.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
25 / 30 · 82.7%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2015-8605

When you'll hear from us

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
iscdhcp
sophosunified threat management up2date
debiandebian linux
canonicalubuntu linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • canonical ubuntu linux12.04
  • canonical ubuntu linux14.04
  • canonical ubuntu linux15.04
  • canonical ubuntu linux15.10
  • debian debian linux7.0
  • debian debian linux8.0
  • debian debian linux9.0
  • isc dhcp4.0.0
+12 more rows
  • isc dhcp4.0.1
  • isc dhcp4.0.2
  • isc dhcp4.0.3
  • isc dhcp4.1-esv
  • isc dhcp4.1.0
  • isc dhcp4.1.1
  • isc dhcp4.1.2
  • isc dhcp4.2.0
  • isc dhcp4.2.1
  • isc dhcp4.2.2
  • isc dhcp4.2.3
  • isc dhcp4.2.4

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12isc-dhcpbefore 4.3.3-74.3.3-7
Debian:6.0isc-dhcpbefore 4.1.1-P1-15+squeeze94.1.1-P1-15+squeeze9
Debian:6.0isc-dhcpbefore 4.1.1-P1-15+squeeze104.1.1-P1-15+squeeze10
Debian:7isc-dhcpbefore 4.2.2.dfsg.1-5+deb70u84.2.2.dfsg.1-5+deb70u8
Debian:8isc-dhcpbefore 4.3.1-6+deb8u24.3.1-6+deb8u2
openSUSE:Tumbleweeddhcpbefore 4.3.3.P1-3.14.3.3.P1-3.1
SUSE:Linux Enterprise Desktop 12dhcpbefore 4.2.6-14.3.14.2.6-14.3.1
SUSE:Linux Enterprise Desktop 12 SP1dhcpbefore 4.3.3-4.14.3.3-4.1
SUSE:Linux Enterprise Software Development Kit 11 SP3dhcpbefore 4.2.4.P2-0.24.14.2.4.P2-0.24.1

Same product

isc: all records

Other highest-scoring records for the same primary product.

  • CVE-2011-0997dhclient in ISC DHCP 3.0.x through 4.2.x before 4.2.1-P1, 3.1-ESV before 3.1-ESV-R1, and 4.1-ESV before 4.1-ESV-R2 allows remote attackers…
    55Plan
  • CVE-2017-3144Failure to properly clean up closed OMAPI connections can exhaust available sockets
    52Plan
  • CVE-2009-0692Stack-based buffer overflow in the script_write_params method in client/dhclient.c in ISC DHCP dhclient 4.1 before 4.1.0p1, 4.0 before…
    48Plan

Published before and after this one in the same product

  • ← EarlierCVE-2012-3955Sep 14, 2012 · ISC DHCP 4.1.x before 4.1-ESV-R7 and 4.2.x before 4.2.4-P2 allows remote attackers to cause a denial of service (daemon crash) in…
    34Monitor
  • ← EarlierCVE-2013-2494Mar 28, 2013 · libdns in ISC DHCP 4.2.x before 4.2.5-P1 allows remote name servers to cause a denial of service (memory consumption) via vectors involving…
    19Monitor
  • Later →CVE-2016-2774Mar 9, 2016 · ISC DHCP 4.1.x before 4.1-ESV-R13 and 4.2.x and 4.3.x before 4.3.4 does not restrict the number of concurrent TCP sessions, which allows…
    45Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:isc-dhcp4.3.3-7 · Debian:12Package registry (OSV)
opensuse:dhcp4.3.3.P1-3.1 · openSUSE:TumbleweedPackage registry (OSV)
suse:dhcp4.2.4.P2-0.24.1 · SUSE:Linux Enterprise Software Development Kit 11 SP3Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Not on record for this CVE: patch commit or PR link · researcher credit · variant or chain candidate.

Technical details

Attack conditions

  • Someone on the same network segment can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Adjacent
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

References

Show all references (11 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records