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Vulnerabilities

Vulnerability · CVE-2023-39470

PaperCut papercut_ng Exposed Dangerous Method or Function

Published Sep 1, 2026 · catalog updated Sep 1, 2026 · PaperCut

Patch now

CVE-2023-39470 is in the CISA known-exploited catalog. Confirm PaperCut against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
1.76%
Remediation
Remediation guidance
Affected products
vendor PaperCut papercut_ng

PaperCut NG print.script.sandboxed Exposed Dangerous Function Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PaperCut NG. Authentication is required to exploit this vulnerability. The specific flaw exists within the management of the print.script.sandboxed setting. The issue results from the exposure of a dangerous function. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-20965.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor PaperCut papercut_ngversion unspecified

How to fix CVE-2023-39470

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2023-39470 is in the CISA known-exploited catalog. Confirm PaperCut against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 1.76%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 1, 2026 · VulnCheck KEV

    Detected

    PaperCut NG print.script.sandboxed Exposed Dangerous Function Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PaperCut NG. Authentication is required to exploit this vulnerability. The specific flaw exists within the management of the print.script.sandboxed setting. The issue results from the exposure of a dange

  2. Sep 1, 2026 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2023-39470

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-39470

    30-day exploitation probability 1.8%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2023-39470

    PaperCut NG print.script.sandboxed Exposed Dangerous Function Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PaperCut NG. Authentication is required to exploit this vulnerability. The specific

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.