CVE-2024-47076Public exploitNetwork attack vector

Print-system data injection via unvalidated IPP attributes

Published Sep 26, 2024 · Updated Nov 3, 2025

Input validation failure in OpenPrinting libcupsfilters 2.1b1 and earlier allows remote attackers to inject data via IPP responses. cfGetPrinterAttributes5 returns a server's attribute set without calling ippValidateAttributes, allowing forged values to reach PPD generation and other CUPS consumers. Reachability requires an attacker-controlled IPP server response and a caller that uses the returned attributes; code execution requires the separately vulnerable downstream components in the published chain.

CVSS severity8.6
High
EPSS probability77.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Input validation failure in OpenPrinting libcupsfilters 2.1b1 and earlier allows remote attackers to inject data via IPP responses. cfGetPrinterAttributes5 returns a server's attribute set without calling ippValidateAttributes, allowing forged values to reach PPD generation and other CUPS consumers. Reachability requires an attacker-controlled IPP server response and a caller that uses the returned attributes; code execution requires the separately vulnerable downstream components in the published chain.

The record

CVE
CVE-2024-47076
Published
Sep 26, 2024
Updated
Nov 3, 2025
Vendor
OpenPrinting
Product
libcupsfilters
Classifications
CWE-20, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record 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 <=2.1b1
  2. Affected versionversion=<= 2.1b1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenPrinting · libcupsfiltersversion=0 <=2.1b1; version=<= 2.1b1

Published CVSS scores

8.6UbuntuCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
T1190Exploit Public-Facing Application

Public exploit references

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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