CVE & CISA-KEV Catalog

CVE-2018-1000517

CRITICALEPSS 98th pctl
9.8
CVSS v3
NVD

Description

BusyBox project BusyBox wget version prior to commit 8e2174e9bd836e53c8b9c6e00d1bc6e2a718686e contains a Buffer Overflow vulnerability in Busybox wget that can result in heap buffer overflow. This attack appear to be exploitable via network connectivity. This vulnerability appears to have been fixed in after commit 8e2174e9bd836e53c8b9c6e00d1bc6e2a718686e.

CWE-120Classic Buffer Overflow

How to fix

Remediation Available
busyboxDebian
Fixed in:1:1.27.2-3CVE-2018-1000517
Fixed in:1:1.27.2-3CVE-2018-1000517
Fixed in:1:1.27.2-3CVE-2018-1000517
Fixed in:1:1.27.2-3CVE-2018-1000517
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

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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

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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

Exploit Intelligence

32.92%probability of exploitation in 30 days
98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

Related Vulnerabilities

Other CWE-120 (Classic Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2014-0195Medium6.8100%-Fix
CVE-2017-7269Critical9.8100%KEV-
CVE-2019-11043High8.7100%KEV + RansomFix
CVE-2011-4862High10.095%-Fix
CVE-2007-5659High7.894%KEVFix
CVE-2022-3786High7.592%-Fix

Common questions

How do I fix CVE-2018-1000517?

Published advisories record a fix for 6 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2018-1000517 being actively exploited?

Not that we know of. CVE-2018-1000517 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 32.9% is the estimated probability that it will be exploited in the next 30 days. That is higher than 98% of all scored CVEs.

How severe is CVE-2018-1000517?

CVE-2018-1000517 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2018-1000517 affect?

Published advisories record a fix for busybox (Debian), busybox (Ubuntu), busybox-initramfs (Ubuntu), busybox-static (Ubuntu), and 2 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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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 2025-06-09.