ExploitedNot in CISA KEV yetFix available

CVE-2023-39470

Q: Is CVE-2023-39470 actively exploited?

Active exploitation of CVE-2023-39470 has not been confirmed. Its EPSS score was 1.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2023-39470?

CVE-2023-39470 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Exploitation confirmed. First attested on 2026-09-01 by GCVE · previdian, GCVE · shadowserver.

Published2024-11-22
Fixed in22.1.1
WeaknessCWE-749

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC

2024-11-2220:15CVE publishedNVD
2026-09-01Listed as exploited by GCVEGCVE
2026-09-01Exploitation first reportedGCVE

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-39470?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-39470?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · CISA-ADP

Papercut papercut ng

Branch	Affected	Fixed in	Source
22.1	< 22.1.1	22.1.1	NVD
22.0	= 22.0.10 65996	no fix published	CISA-ADP

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Papercut papercut ng to 22.1.1

Advisories and patches

www.papercut.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

GCVEexploitation2026-09-01
CISA-ADPSSVC decisionnone2024-11-26
OpenCVESSVC decisionnone—
NVDCVSS 3.17.2read 2026-10-23
CNACVSS 3.07.2read 2026-10-23
CNAweakness (CWE)CWE-749read 2026-10-23
FIRST EPSSEPSS score1.8 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Published: 2024-11-22
Last Modified: 2026-06-17
NVD status: Analyzed

Frequently asked questions

What is CVE-2023-39470?

Is CVE-2023-39470 actively exploited?

Active exploitation of CVE-2023-39470 has not been confirmed. Its EPSS score was 1.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-39470?

CVE-2023-39470 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

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