CVE-2024-47611Network attack vector

Argument injection via Unicode best-fit mapping

Published Oct 2, 2024 · Updated Nov 21, 2024

Argument injection in XZ Utils command-line tools 5.6.2 and earlier allows remote attackers to alter commands via malicious filenames. Native Windows builds convert unsupported Unicode filename characters through legacy code-page best-fit mappings, producing ASCII option delimiters or path syntax. The issue requires a MinGW-w64 or MSVC build and a filename reaching a tool invocation; Cygwin and MSYS2 builds and liblzma are unaffected.

CVSS severity6.3
Medium
EPSS probability0.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Argument injection in XZ Utils command-line tools 5.6.2 and earlier allows remote attackers to alter commands via malicious filenames. Native Windows builds convert unsupported Unicode filename characters through legacy code-page best-fit mappings, producing ASCII option delimiters or path syntax. The issue requires a MinGW-w64 or MSVC build and a filename reaching a tool invocation; Cygwin and MSYS2 builds and liblzma are unaffected.

The record

CVE
CVE-2024-47611
Published
Oct 2, 2024
Updated
Nov 21, 2024
Vendor
Tukaani Project
Product
XZ Utils
Classifications
CWE-88, CWE-176, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 21, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <5.6.3
  2. Affected versionversion=< 5.6.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Tukaani Project · XZ Utilsversion=0 <5.6.3; version=< 5.6.3

Published CVSS scores

6.3GitHub CNACVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-88Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
CWE-176Improper Handling of Unicode Encoding
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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