Exploited CVEs / CVE-2023-2533
CVE-2023-2533
PaperCut NG/MF Cross-Site Request Forgery (CSRF) Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted. Federal agencies were required to remediate by 2025-08-18 (that deadline has passed); treat that date as the outer bound for your own environment. Check the vendor security advisory for the fix.
Actively exploited PaperCut NG/MF vulnerability, High severity, CVSS 8.8. Added to the CISA KEV catalog 2025-07-28.
Risk summary
Updated July 27, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.
Senserva AI Opinion for CVE-2023-2533
A cross-site request forgery in PaperCut NG/MF that, under specific conditions, lets an attacker change security settings or execute code by riding an authenticated admin's browser session. It entered KEV in July 2025, the second PaperCut flaw to see real-world exploitation, confirming print servers stay on attacker target lists. CSRF needs an admin to be lured while logged in, so the phishing email and the vulnerable server are a package deal.
Do this: Update PaperCut servers and restrict admin console access to dedicated management networks so a browser-borne CSRF has nothing to reach.
AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2023-2533
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for CVE-2023-2533
Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.
CISA required action
Federal (BOD 22-01) remediation due date: 2025-08-18 (past due).
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Official fix for CVE-2023-2533
Check the vendor's security advisory channel for the patched NG/MF versions and workarounds.
Common questions about CVE-2023-2533
Is CVE-2023-2533 actively exploited?
Yes. CVE-2023-2533 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2025-07-28, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is 29%.
What is the CISA deadline and required action for CVE-2023-2533?
CISA set the federal (BOD 22-01) remediation due date at 2025-08-18, which has passed; treat any unremediated system as overdue. The verbatim 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.
What fixes CVE-2023-2533?
Check the vendor's security advisory for the patched NG/MF versions and any workarounds. KEV listing makes this a fix-first item: patch it ahead of higher-CVSS issues nobody is exploiting.
Can I ask my own AI about CVE-2023-2533?
Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2023-2533's key facts: severity, CVSS, EPSS, the KEV date, the CISA due date, and the required action. Copy it into Claude, ChatGPT, or Copilot; the data is refreshed twice a day (5 AM and 3 PM US Central).
More exploited PaperCut CVEs
The newest PaperCut entries on the CISA KEV catalog:
Authoritative references
Every actively exploited CVE, searchable with due dates and CSV export: the exploited-CVE tracker. The newest additions: exploited this week.
