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CVE-2015-8605

56
FAUCET Score

CVE-2015-8605 describes a denial-of-service vulnerability in ISC DHCP versions 4.x, 4.2.x, and 4.3.x, affecting products from vendors like Canonical, Debian, ISC, and Sophos. An unauthenticated remote attacker can crash the DHCP application by sending a specially crafted UDP IPv4 packet with an invalid length field. This vulnerability has a CVSS v3.0 score of 6.5 (Medium), indicating a low attack complexity and no user interaction required, with a high impact on availability. Despite its high FAUCET Risk Score, there is no evidence of active exploitation, no public exploit code, and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 9.318CPE matchmatch criteria
cpe:2.3:a:sophos:unified_threat_management_up2date:*:*:*:*:*:*:*:*
<= 9.353CPE matchmatch criteria
cpe:2.3:a:sophos:unified_threat_management_up2date:*:*:*:*:*:*:*:*
4.0.0CPE matchmatch criteria
cpe:2.3:a:isc:dhcp:4.0.0:*:*:*:*:*:*:*
4.0.1CPE matchmatch criteria
cpe:2.3:a:isc:dhcp:4.0.1:*:*:*:*:*:*:*
4.0.2CPE matchmatch criteria
cpe:2.3:a:isc:dhcp:4.0.2:-:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
76.45%
Probability of exploitation in next 30 days
EPSS Percentile
99.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.7645 is in the 100th percentile among its peer group of 1,802 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (3)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: dhcp
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: dhcp
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: dhcp

Vendor Advisories (1)

redhatCVE-2015-8605Moderate

dhcp: UDP payload length not properly checked

Jan 12, 2016

References

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