BusyBox wget thru 1.3.7 accepted raw CR (0x0D)/LF (0x0A) and other C0 control bytes in the HTTP request-target (path/query), allowing the re
BusyBox wget thru 1.3.7 accepted raw CR (0x0D)/LF (0x0A) and other C0 control bytes in the HTTP request-target (path/query), allowing the request line to be split and attacker-controlled headers to be injected. To preserve the HTTP/1.1 request-line shape METHOD SP request-target SP HTTP/1.1, a raw space (0x20) in the request-target must also be rejected (clients should use %20).
- Published
- Nov 10, 2025
- Updated
- Jun 17, 2026
- EPSS
- 0.3% · 19th percentile
- CWE
- CWE-284
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Report tools
Action score
26
Monitor
Low priority for now.
- CVSS
- 26 / 40 · 6.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.3%
CISA SSVC decision
- Exploitation
- proof of concept
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| busybox | busybox | cpe:2.3:a:busybox:busybox |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- busybox busyboxup to 1.37.0 inclusive
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | busybox | all versions | — |
| Debian:14 | busybox | before 1:1.37.0-8 | 1:1.37.0-8 |
| openSUSE:Leap 15.6 | busybox-links | before 1.37.0-150500.7.9.1 | 1.37.0-150500.7.9.1 |
| openSUSE:Leap 16.0 | busybox | before 1.37.0-160000.4.1 | 1.37.0-160000.4.1 |
| openSUSE:Tumbleweed | busybox | before 1.37.0-8.1 | 1.37.0-8.1 |
| Red Hat:hummingbird:1 | busybox | before 0:1.37.0-7.1.hum1 | 0:1.37.0-7.1.hum1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | busybox | before 1.35.0-150400.3.14.1 | 1.35.0-150400.3.14.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | busybox | before 1.37.0-150500.10.14.1 | 1.37.0-150500.10.14.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | busybox | before 1.37.0-150500.10.14.1 | 1.37.0-150500.10.14.1 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP7 | busybox | before 1.37.0-150700.18.10.1 | 1.37.0-150700.18.10.1 |
| SUSE:Linux Enterprise Server 12 SP5-LTSS | busybox | before 1.35.0-10.3.1 | 1.35.0-10.3.1 |
| SUSE:Linux Enterprise Server 16.0 | busybox | before 1.37.0-160000.4.1 | 1.37.0-160000.4.1 |
Same product
busybox: all recordsOther 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 Bu49Plan
- 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 vecto47Plan
- CVE-2022-48174There is a stack overflow vulnerability in ash.c:6030 in busybox before 1.35.40Plan
- CVE-2021-42377An attacker-controlled pointer free in Busybox's hush applet leads to denial of service and possible code execution when processing a crafte40Plan
- CVE-2017-16544In 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 fi37Monitor
- CVE-2022-28391BusyBox through 1.35.0 allows remote attackers to execute arbitrary code if netstat is used to print a DNS PTR record's value to a VT compat36Monitor
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 |
|---|---|---|
| debian:busybox | 1:1.37.0-8 · Debian:14 | Package registry (OSV) |
| opensuse:busybox | 1.37.0-150500.10.14.1 · openSUSE:Leap 15.6 | Package registry (OSV) |
| opensuse:busybox-links | 1.37.0-150500.7.9.1 · openSUSE:Leap 15.6 | Package registry (OSV) |
| red hat:busybox | 0:1.37.0-7.1.hum1 · Red Hat:hummingbird:1 | Package registry (OSV) |
| suse:busybox | 1.37.0-150500.10.14.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | Package registry (OSV) |
| suse:busybox | 1.37.0-150700.18.10.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP7 | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Proof-of-concept repository on GitHub ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Proof-of-concept repository on GitHub | stars:0 | 2026-06-12 |
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.
- Published
- First PoC+213 d
- TodaySep 30, 2026+324 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, 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.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- low · data can be read
- Integrity
- low · data or configuration can be modified
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- Low
- Integrity impact
- Low
- Availability impact
- None
Weakness class (CWE)
CWE-284 · Improper Access ControlCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
nvd-secondary
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)
- Embedding Scripts within ScriptsCAPEC-19likelihood: High · High
- Malicious Logic InsertionCAPEC-441likelihood: Medium · High
- Modification of Windows Service ConfigurationCAPEC-478likelihood: Low · High
- Malicious Root CertificateCAPEC-479likelihood: Low · Low
- Intent SpoofCAPEC-502
- WebView ExposureCAPEC-503
- Data Injected During ConfigurationCAPEC-536likelihood: Low · High
- Incomplete Data Deletion in a Multi-Tenant EnvironmentCAPEC-546likelihood: Low · Medium
ATT&CK techniques
- RootkitT1014
- Obfuscated Files or Information: Embedded PayloadsT1027.009
- Boot or Logon Initialization ScriptsT1037
- Taint shared contentT1080
- Server Software Component: Terminal Services DLLT1505.005
- Pre-OS Boot:BootkitT1542.003
- Create or Modify System ProcessT1543
- Create or Modify System Process: Launch AgentT1543.001
- Create or Modify System Process:Windows ServiceT1543.003
- Create or Modify System Process: Launch DaemonT1543.004
- Event Triggered Execution:Change Default File AssociationT1546.001
- Event Triggered Execution:.bash_profile and .bashrcT1546.004
- Event Triggered Execution: Accessibility FeaturesT1546.008
- Event Triggered Execution: Installer PackagesT1546.016
- Boot or Logon Autostart ExecutionT1547
- Boot or Logon Autostart Execution:Kernel Modules and ExtensionsT1547.006
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- lists.busybox.net/pipermail/busybox/attachments/20250823/ccdc96ef/attachment-0001.htm
- lists.busybox.net/pipermail/busybox/attachments/20250828/e7f90492/attachment.htm
- cert-portal.siemens.com/productcert/html/ssa-253495.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.