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Vulnerability record · CVE-2016-2147 · published 9 February 2017

CVE-2016-2147: Busybox integer overflow vulnerability

Busybox · Busybox

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.

7.5 CVSS 3.1 High EPSS 7.7% · top 5.6% CWE-190 · Integer overflow
7.5CVSS 3.1 base score, v2 5.0
7.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
28References, 14 tagged exploit
17 Jun 2026Last modified by 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.

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

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/153278/WAGO-852-Industrial-Managed-Switch-Series-Code-Execution-Hardcoded-Credentia ExploitThird Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html ExploitThird Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2019/Jun/18 ExploitMailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2019/Sep/7 ExploitMailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2020/Aug/20 ExploitMailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/03/11/16 Mailing ListPatchThird Party Advisory
https://busybox.net/news.html Vendor Advisory
https://git.busybox.net/busybox/commit/?id=d474ffc68290e0a83651c4432eeabfa62cd51e87 PatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00037.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00020.html Mailing ListThird Party Advisory
https://seclists.org/bugtraq/2019/Jun/14 ExploitMailing ListThird Party Advisory
https://seclists.org/bugtraq/2019/Sep/7 ExploitMailing ListThird Party Advisory
https://security.gentoo.org/glsa/201612-04 Third Party Advisory
https://usn.ubuntu.com/3935-1/ Third Party Advisory
http://packetstormsecurity.com/files/153278/WAGO-852-Industrial-Managed-Switch-Series-Code-Execution-Hardcoded-Credentia ExploitThird Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html ExploitThird Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2019/Jun/18 ExploitMailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2019/Sep/7 ExploitMailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2020/Aug/20 ExploitMailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/03/11/16 Mailing ListPatchThird Party Advisory
https://busybox.net/news.html Vendor Advisory
https://git.busybox.net/busybox/commit/?id=d474ffc68290e0a83651c4432eeabfa62cd51e87 PatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00037.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00020.html Mailing ListThird Party Advisory
https://seclists.org/bugtraq/2019/Jun/14 ExploitMailing ListThird Party Advisory
https://seclists.org/bugtraq/2019/Sep/7 ExploitMailing ListThird Party Advisory
https://security.gentoo.org/glsa/201612-04 Third Party Advisory
https://usn.ubuntu.com/3935-1/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2016-2147), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.