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Fencer Vulns
high 8.4

CVE-2023-2533 kev in the critical feed json

PaperCut MF/NG 22.0.10 (Build 65996 2023-03-27) - Remote code execution via CSRF

published 2023-06-20 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-34012

cvss
8.4
version 3.1, CNA
cisa kev
Exploited
added 2025-07-28
epss
28.8%
EPSS 28.8% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known

Summary

A Cross-Site Request Forgery (CSRF) vulnerability has been identified in PaperCut NG/MF, which, under specific conditions, could potentially enable an attacker to alter security settings or execute arbitrary code. This could be exploited if the target is an admin with a current login session. Exploiting this would typically involve the possibility of deceiving an admin into clicking a specially crafted malicious link, potentially leading to unauthorized changes.

Patch / fix

cisa required action Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  • PaperCut PaperCut NG/MF 2.1.1, 20.1.8, 21.2.12

Timeline

  1. Published
  2. CISA SSVC: exploitation active
  3. Added to CISA KEV
  4. CISA patch deadline

Known exploited

Added
15 mo ago
Patch by
2025-08-18 (14 mo ago)
Ransomware
Not known
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Vendor, product
PaperCut, NG/MF
CISA name
PaperCut NG/MF Cross-Site Request Forgery (CSRF) Vulnerability

ATT&CK techniques

How it is exploited and what it leads to, in MITRE ATT&CK terms.

  • T1566.002 Spearphishing Link exploitation
  • T1059 Command and Scripting Interpreter primary impact
  • T1547 Boot or Logon Autostart Execution primary impact

kev release 2025-07-28, att&ck v16.1. KEV to ATT&CK mappings by the MITRE Center for Threat-Informed Defense (Mappings Explorer, Apache-2.0). © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. Terms of use

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
15 mo ago

Exploit prediction

28.83% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • fluidattacks.com https://fluidattacks.com/advisories/arcangel/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 8.4 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • PaperCut PaperCut NG/MF

Classification

Weakness
  • CWE-352 Cross-Site Request Forgery

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.