NVD / CVE Program· CNA mitre

CVE-2018-1000500: Busybox contains a Missing SSL certificate validation vulnerability in The "busybox wget" applet that can result in arbitrary code execution

Noroxi assessment

Priority: Monitor (action score 33/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 2.4% (FIRST EPSS); higher than 84.6% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
Fixed version: busybox (Alpine:v3.10) 1.28.3-r2; busybox (openSUSE:Leap 15.2) 1.26.2-lp152.5.3.1; busybox-static (openSUSE:Leap 15.2) 1.26.2-lp152.5.3.1.

Low priority for now. Upgrade to busybox (Alpine:v3.10) 1.28.3-r2; busybox (openSUSE:Leap 15.2) 1.26.2-lp152.5.3.1; busybox-static (openSUSE:Leap 15.2) 1.26.2-lp152.5.3.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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".

HighCVSS 8.1 · v3.1—No exploit Fix available

Published: Jun 26, 2018
Updated: Jun 16, 2026
EPSS: 2.4% · 84th percentile
CWE: CWE-295

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 32 / 40 · 8.1 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 1 / 30 · 2.4%

CISA SSVC decision

Exploitation: proof of concept
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

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Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

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Noroxi analysis

What does it mean in your environment?

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
busybox	busybox	cpe:2.3:a:busybox:busybox

Check your site's encryption

This vulnerability is about certificate validation or weak cryptography. The free SSL checker tests your certificate, enabled TLS versions and weak ciphers.

Run the SSL check

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

busybox busyboxbefore 1.32.0

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Alpine:v3.10	busybox	before 1.28.3-r2	1.28.3-r2
Debian:12	busybox	from 0	—
openSUSE:Leap 15.2	busybox	before 1.26.2-lp152.5.3.1	1.26.2-lp152.5.3.1
openSUSE:Leap 15.2	busybox-static	before 1.26.2-lp152.5.3.1	1.26.2-lp152.5.3.1
openSUSE:Leap 15.3	busybox	before 1.34.1-4.9.1	1.34.1-4.9.1
openSUSE:Leap 15.3	busybox	before 1.26.2-4.5.1	1.26.2-4.5.1
openSUSE:Leap 15.3	busybox-static	before 1.26.2-4.5.1	1.26.2-4.5.1
openSUSE:Leap 15.3	virtualbox	before 6.1.34-lp153.2.27.2	6.1.34-lp153.2.27.2
openSUSE:Leap 15.3	virtualbox-kmp	before 6.1.34-lp153.2.27.1	6.1.34-lp153.2.27.1
openSUSE:Leap 15.4	busybox	before 1.35.0-150400.3.3.1	1.35.0-150400.3.3.1
openSUSE:Tumbleweed	busybox	before 1.35.0-1.1	1.35.0-1.1
SUSE:Linux Enterprise Module for Basesystem 15 SP2	busybox	before 1.26.2-4.5.1	1.26.2-4.5.1
SUSE:Linux Enterprise Module for Basesystem 15 SP2	busybox-static	before 1.26.2-4.5.1	1.26.2-4.5.1
SUSE:Linux Enterprise Module for Basesystem 15 SP3	busybox	before 1.34.1-4.9.1	1.34.1-4.9.1
SUSE:Linux Enterprise Module for Basesystem 15 SP4	busybox	before 1.35.0-150400.3.3.1	1.35.0-150400.3.3.1
SUSE:OpenStack Cloud 9	busybox	before 1.35.0-4.3.1	1.35.0-4.3.1

Same product

busybox: all records

Other highest-scoring records for the same primary product.

CVE-2018-1000517BusyBox project BusyBox wget version prior to commit 8e2174e9bd836e53c8b9c6e00d1bc6e2a718686e contains a Buffer Overflow vulnerability in Bu
49Plan
CVE-2016-2148Heap-based buffer overflow in the DHCP client (udhcpc) in BusyBox before 1.25.0 allows remote attackers to have unspecified impact via vecto
47Plan
CVE-2022-48174There is a stack overflow vulnerability in ash.c:6030 in busybox before 1.35.
40Plan

Published before and after this one in the same product

← EarlierCVE-2017-15874Oct 24, 2017 · archival/libarchive/decompress_unlzma.c in BusyBox 1.27.2 has an Integer Underflow that leads to a read access violation.
20Monitor
← EarlierCVE-2017-16544Nov 20, 2017 · In the add_match function in libbb/lineedit.c in BusyBox through 1.27.2, the tab autocomplete feature of the shell, used to get a list of fi
37Monitor
Later →CVE-2015-9261Jul 26, 2018 · huft_build in archival/libarchive/decompress_gunzip.c in BusyBox before 1.27.2 misuses a pointer, causing segfaults and an application crash
23Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
alpine:busybox	1.28.3-r2 · Alpine:v3.10	Package registry (OSV)
opensuse:busybox	1.35.0-150400.3.3.1 · openSUSE:Leap 15.4	Package registry (OSV)
opensuse:busybox-static	1.26.2-lp152.5.3.1 · openSUSE:Leap 15.2	Package registry (OSV)
opensuse:virtualbox	6.1.34-lp153.2.27.2 · openSUSE:Leap 15.3	Package registry (OSV)
opensuse:virtualbox-kmp	6.1.34-lp153.2.27.1 · openSUSE:Leap 15.3	Package registry (OSV)
suse:busybox	1.26.2-4.5.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP2	Package registry (OSV)
suse:busybox	1.35.0-150400.3.3.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP4	Package registry (OSV)
suse:busybox-static	1.26.2-4.5.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP2	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

git.busybox.netpatch

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
Special conditions such as timing or configuration are required.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Network
Attack complexity: High
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-295 · Improper Certificate Validation

CVSS vector

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

nvd-primary

Root cause

A certificate validation error is silently swallowed instead of terminating the connection. Often, code added for a test environment makes its way into production.

The bug in code

The whole CWE-295 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

kotlin

1override fun checkServerTrusted(chain: Array<X509Certificate>, type: String) {
2  // Left empty for the test environment
3}

Fixed

kotlin

1val client = OkHttpClient.Builder()
2  .certificatePinner(
3    CertificatePinner.Builder()
4      .add("api.sirius.example", "sha256/…")
5      .build()
6  ).build()

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log

Fix✗ → ✓Sep 28, 2026, 10:44 PM UTC

For records you follow, these changes also arrive as notifications. →

References

lists.busybox.net/pipermail/busybox/2018-May/086462.html

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records