CVE & CISA-KEV Catalog

CVE-2018-1000500

HIGHEPSS 83th pctl
8.1
CVSS v3
NVD

Description

Busybox contains a Missing SSL certificate validation vulnerability in The "busybox wget" applet that can result in arbitrary code execution. This attack appear to be exploitable via Simply download any file over HTTPS using "busybox wget https://compromised-domain.com/important-file".

CWE-295Improper Certificate Validation

How to fix

Remediation Available
busyboxUbuntu
Fixed in:1:1.27.2-2ubuntu3.3USN-4531-1
Fixed in:1:1.30.1-4ubuntu6.2USN-4531-1
busybox-initramfsUbuntu
Fixed in:1:1.27.2-2ubuntu3.3USN-4531-1
Fixed in:1:1.30.1-4ubuntu6.2USN-4531-1
busybox-staticUbuntu
Fixed in:1:1.27.2-2ubuntu3.3USN-4531-1
Fixed in:1:1.30.1-4ubuntu6.2USN-4531-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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 ComplexityHigh
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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

Exploit Intelligence

2.46%probability of exploitation in 30 days
83rdpercentile

Elevated risk: more likely to be exploited than 83% of all known CVEs.

References

Vendor Advisory1
Other references1

Related Vulnerabilities

Other CWE-295 (Improper Certificate Validation) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2015-4000Low3.7100%-Fix
CVE-2020-0601High8.189%KEVFix
CVE-2009-3555Critical9.887%-Fix
CVE-2022-26923High8.883%KEVFix
CVE-2023-27823Critical9.853%--
CVE-2022-42979High8.824%--

Common questions

How do I fix CVE-2018-1000500?

Published advisories record a fix for 3 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-2018-1000500 being actively exploited?

Not that we know of. CVE-2018-1000500 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 2.5% is the estimated probability that it will be exploited in the next 30 days. That is higher than 83% of all scored CVEs.

How severe is CVE-2018-1000500?

CVE-2018-1000500 has a CVSS v3 base score of 8.1, rated high. 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-2018-1000500 affect?

Published advisories record a fix for busybox (Ubuntu), busybox-initramfs (Ubuntu), busybox-static (Ubuntu). 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.