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CVE-2016-6301

28
FAUCET Score

CVE-2016-6301 describes a denial-of-service vulnerability in the recv_and_process_client_pkt function within busybox's NTP implementation. A remote attacker can exploit this by sending a crafted NTP packet, leading to a communication loop that consumes CPU and bandwidth resources. With a CVSS v3 score of 7.5 (HIGH), this vulnerability is easily exploitable over the network without authentication, resulting in high availability impact. Despite its severity, there is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.25.1CPE matchmatch criteria
cpe:2.3:a:busybox:busybox:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
8.89%
Probability of exploitation in next 30 days
EPSS Percentile
94.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0889 is in the 91st percentile among its peer group of 51,455 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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 (2)

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

Vendor Advisories (1)

redhatCVE-2016-6301Moderate

busybox: NTP server denial of service flaw

Aug 3, 2016

References

packetstormsecurity.com / files/153278/WAGO-852-Industrial-Managed-Switch-Series-Code-Execution-Hardcoded-Credentials.html
packetstormsecurity.com / files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
seclists.org / fulldisclosure/2019/Jun/18
seclists.org / fulldisclosure/2019/Sep/7
seclists.org / fulldisclosure/2020/Aug/20
seclists.org / fulldisclosure/2020/Mar/15
git.busybox.net / busybox/commit
Issue TrackingPatch
seclists.org / bugtraq/2019/Jun/14
seclists.org / bugtraq/2019/Sep/7
security.gentoo.org / glsa/201701-05
Third Party Advisory
openwall.com / lists/oss-security/2016/08/03/7
Mailing ListThird Party Advisory
securityfocus.com / bid/92277
Third Party AdvisoryVDB Entry