CVE & CISA-KEV Catalog

CVE-2016-2147

HIGHEPSS 94th pctl
7.5
CVSS v3
NVD

Description

Integer overflow in the DHCP client (udhcpc) in BusyBox before 1.25.0 allows remote attackers to cause a denial of service (crash) via a malformed RFC1035-encoded domain name, which triggers an out-of-bounds heap write.

CWE-190Integer Overflow

How to fix

Remediation Available
busyboxDebian
Fixed in:1:1.27.2-1CVE-2016-2147
Fixed in:1:1.27.2-1CVE-2016-2147
Fixed in:1:1.27.2-1CVE-2016-2147
Fixed in:1:1.27.2-1CVE-2016-2147
busyboxUbuntu
Fixed in:1:1.21.0-1ubuntu1.4USN-3935-1
Fixed in:1:1.22.0-15ubuntu1.4USN-3935-1
Fixed in:1:1.27.2-2ubuntu3.2USN-3935-1
busybox-initramfsUbuntu
Fixed in:1:1.21.0-1ubuntu1.4USN-3935-1
Fixed in:1:1.22.0-15ubuntu1.4USN-3935-1
Fixed in:1:1.27.2-2ubuntu3.2USN-3935-1
busybox-staticUbuntu
Fixed in:1:1.21.0-1ubuntu1.4USN-3935-1
Fixed in:1:1.22.0-15ubuntu1.4USN-3935-1
Fixed in:1:1.27.2-2ubuntu3.2USN-3935-1
udhcpcUbuntu
Fixed in:1:1.21.0-1ubuntu1.4USN-3935-1
Fixed in:1:1.22.0-15ubuntu1.4USN-3935-1
Fixed in:1:1.27.2-2ubuntu3.2USN-3935-1
udhcpdUbuntu
Fixed in:1:1.21.0-1ubuntu1.4USN-3935-1
Fixed in:1:1.22.0-15ubuntu1.4USN-3935-1
Fixed in:1:1.27.2-2ubuntu3.2USN-3935-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

8.05%probability of exploitation in 30 days
94thpercentile

High risk: more likely to be exploited than 94% of all known CVEs.

References

Vendor Advisory1

Related Vulnerabilities

Other CWE-190 (Integer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2020-16040Medium6.5100%-Fix
CVE-2019-11477High7.599%-Fix
CVE-2023-44443High7.894%-Fix
CVE-2014-0569High9.390%--
CVE-2017-3599High7.590%-Fix
CVE-2023-21716Critical9.882%-Fix
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.