CVE-2023-2533
HighExploitedPublic exploitA 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.
Published Jun 21, 2023 · Updated Oct 21, 2025 · Also known as TR-23-0371
Key Facts
Patch immediately- CVE-2023-2533 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Papercut Mf, Papercut Ng, PaperCut NG/MF.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jul 28, 2025. Public exploit code is available.
- EPSS estimates a 29% probability of exploitation in the next 30 days.
- Fixed versions are available, including PaperCut NG/MF 2.1.1, Papercut Mf 20.1.8, Papercut Ng 20.1.8.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
29%
Higher than 98.1% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2023-2533 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Jul 28, 2025 | Aug 18, 2025 | Not reported |
| Industry KEV feed | Jul 28, 2025 | Aug 18, 2025 | Not reported |
| CIRCL KEV | Jul 28, 2025 | Aug 18, 2025 | Not reported |
| ENISA EUVD | Jul 28, 2025 | n/a | Not reported |
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.
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Papercut MfPapercut | See advisory | 20.1.8 |
| Papercut NgPapercut | See advisory | 20.1.8 |
| PaperCut NG/MF | >= 22.0.10 | 2.1.1 |
Patched Releases
PaperCut NG/MF
2.1.1
Papercut Mf
20.1.8
Papercut Ng
20.1.8
Timeline
Publicly disclosed
Jun 21, 2023
Added to CISA KEV
Jul 28, 2025
Added to Industry KEV feed
Jul 28, 2025
Added to CIRCL KEV
Jul 28, 2025
Added to ENISA EUVD
Jul 28, 2025
Last updated
Oct 21, 2025
Weakness Type
- CWE-352 Cross-Site Request Forgery (CSRF)
References
- advisoryhttps://fluidattacks.com/advisories/arcangel/
- advisoryhttps://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-2533
- advisoryhttps://www.papercut.com/
- advisoryhttps://www.papercut.com/kb/Main/SecurityBulletinJune2023
- advisoryUSOM advisory
FAQ
Common Questions.
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.
Affected: Papercut Mf; Papercut Ng; PaperCut NG/MF versions >= 22.0.10. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jul 28, 2025.
Yes. It was added on Jul 28, 2025 with a federal remediation due date of Aug 18, 2025.
Public exploit code is available.
Fixed versions are available, including PaperCut NG/MF 2.1.1, Papercut Mf 20.1.8, Papercut Ng 20.1.8.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2023-2533 Running On Your Attack Surface?
Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.
Request A Demo