CVE-2023-2533

CRITICALNVD 8.49.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2025-07-28), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.4 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 29%CVSS: 8.4Exploit: cisa kev · ssvc active · epss top5pctExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.4
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
29%
EPSS %ILE
98%
KEV
⚠ Exploited

Published

June 20, 2023

Last Modified

February 26, 2026

Advisory Details (3)

Auto-updated Jun 2, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-2533
generic

Security Bulletin: June 2023 | PaperCut

https://www.papercut.com/kb/Main/SecurityBulletinJune2023
generic

PaperCut MF/NG 22.0.10 - RCE via CSRF | Fluid Attacks

https://fluidattacks.com/advisories/arcangel/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 59× in last 7d / 254× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 994 total refreshes for this CVE.

  1. 2026-09-25 12:27 UTCGHSA enrichment
  2. 2026-09-25 08:42 UTCGHSA enrichment
  3. 2026-09-25 04:57 UTCGHSA enrichment
  4. 2026-09-25 01:13 UTCGHSA enrichment
  5. 2026-09-24 21:28 UTCGHSA enrichment
  6. 2026-09-24 19:31 UTCCISA KEV update
  7. 2026-09-24 17:43 UTCEG score recompute
  8. 2026-09-24 17:43 UTCGHSA enrichment
  9. 2026-09-24 14:01 UTCEPSS rescore
  10. 2026-09-24 13:58 UTCGHSA enrichment
  11. 2026-09-24 10:14 UTCGHSA enrichment
  12. 2026-09-24 06:29 UTCGHSA enrichment
  13. 2026-09-24 02:45 UTCGHSA enrichment
  14. 2026-09-23 23:00 UTCGHSA enrichment
  15. 2026-09-23 19:15 UTCGHSA enrichment
  16. 2026-09-23 15:30 UTCEG score recompute
  17. 2026-09-23 15:30 UTCGHSA enrichment
  18. 2026-09-23 13:45 UTCEPSS rescore
  19. 2026-09-23 11:46 UTCGHSA enrichment
  20. 2026-09-23 08:02 UTCGHSA enrichment
  21. 2026-09-23 04:17 UTCGHSA enrichment
  22. 2026-09-23 00:33 UTCGHSA enrichment
  23. 2026-09-22 20:48 UTCGHSA enrichment
  24. 2026-09-22 19:36 UTCCISA KEV update
  25. 2026-09-22 17:04 UTCEG score recompute
Show 75 more
  1. 2026-09-22 17:04 UTCGHSA enrichment
  2. 2026-09-22 14:45 UTCEPSS rescore
  3. 2026-09-22 13:17 UTCGHSA enrichment
  4. 2026-09-22 09:33 UTCGHSA enrichment
  5. 2026-09-22 05:48 UTCGHSA enrichment
  6. 2026-09-22 02:03 UTCGHSA enrichment
  7. 2026-09-21 22:18 UTCEG score recompute
  8. 2026-09-21 22:18 UTCGHSA enrichment
  9. 2026-09-21 19:09 UTCCISA KEV update
  10. 2026-09-21 18:33 UTCGHSA enrichment
  11. 2026-09-21 14:47 UTCGHSA enrichment
  12. 2026-09-21 11:00 UTCGHSA enrichment
  13. 2026-09-21 07:15 UTCGHSA enrichment
  14. 2026-09-21 03:30 UTCGHSA enrichment
  15. 2026-09-20 23:45 UTCGHSA enrichment
  16. 2026-09-20 20:00 UTCGHSA enrichment
  17. 2026-09-20 16:15 UTCGHSA enrichment
  18. 2026-09-20 12:30 UTCGHSA enrichment
  19. 2026-09-20 08:45 UTCGHSA enrichment
  20. 2026-09-20 05:00 UTCGHSA enrichment
  21. 2026-09-20 01:15 UTCGHSA enrichment
  22. 2026-09-19 21:31 UTCGHSA enrichment
  23. 2026-09-19 17:46 UTCEG score recompute
  24. 2026-09-19 17:46 UTCGHSA enrichment
  25. 2026-09-19 14:01 UTCGHSA enrichment
  26. 2026-09-19 10:16 UTCGHSA enrichment
  27. 2026-09-19 06:31 UTCGHSA enrichment
  28. 2026-09-19 02:46 UTCGHSA enrichment
  29. 2026-09-18 23:01 UTCEG score recompute
  30. 2026-09-18 23:01 UTCGHSA enrichment
  31. 2026-09-18 19:20 UTCCISA KEV update
  32. 2026-09-18 19:17 UTCGHSA enrichment
  33. 2026-09-18 15:32 UTCGHSA enrichment
  34. 2026-09-18 14:15 UTCCISA KEV update
  35. 2026-09-18 11:47 UTCGHSA enrichment
  36. 2026-09-18 08:02 UTCGHSA enrichment
  37. 2026-09-18 04:17 UTCGHSA enrichment
  38. 2026-09-18 00:32 UTCGHSA enrichment
  39. 2026-09-17 20:47 UTCEG score recompute
  40. 2026-09-17 20:47 UTCGHSA enrichment
  41. 2026-09-17 17:02 UTCGHSA enrichment
  42. 2026-09-17 13:07 UTCGHSA enrichment
  43. 2026-09-17 09:22 UTCGHSA enrichment
  44. 2026-09-17 05:37 UTCGHSA enrichment
  45. 2026-09-17 01:52 UTCGHSA enrichment
  46. 2026-09-16 22:07 UTCGHSA enrichment
  47. 2026-09-16 18:22 UTCGHSA enrichment
  48. 2026-09-16 14:38 UTCEG score recompute
  49. 2026-09-16 14:38 UTCGHSA enrichment
  50. 2026-09-16 14:10 UTCCISA KEV update
  51. 2026-09-16 14:05 UTCEPSS rescore
  52. 2026-09-16 10:53 UTCGHSA enrichment
  53. 2026-09-16 07:09 UTCEG score recompute
  54. 2026-09-16 07:09 UTCGHSA enrichment
  55. 2026-09-16 03:24 UTCGHSA enrichment
  56. 2026-09-15 23:39 UTCGHSA enrichment
  57. 2026-09-15 19:54 UTCGHSA enrichment
  58. 2026-09-15 16:09 UTCGHSA enrichment
  59. 2026-09-15 12:24 UTCGHSA enrichment
  60. 2026-09-15 08:40 UTCGHSA enrichment
  61. 2026-09-15 04:55 UTCEG score recompute
  62. 2026-09-15 04:54 UTCGHSA enrichment
  63. 2026-09-15 01:07 UTCGHSA enrichment
  64. 2026-09-14 21:22 UTCGHSA enrichment
  65. 2026-09-14 19:24 UTCCISA KEV update
  66. 2026-09-14 17:37 UTCGHSA enrichment
  67. 2026-09-14 13:52 UTCGHSA enrichment
  68. 2026-09-14 10:08 UTCGHSA enrichment
  69. 2026-09-14 06:23 UTCGHSA enrichment
  70. 2026-09-14 02:39 UTCGHSA enrichment
  71. 2026-09-13 22:54 UTCGHSA enrichment
  72. 2026-09-13 19:09 UTCGHSA enrichment
  73. 2026-09-13 15:24 UTCGHSA enrichment
  74. 2026-09-13 11:39 UTCGHSA enrichment
  75. 2026-09-13 07:54 UTCGHSA enrichment

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Frequently asked(6)

What is CVE-2023-2533?
CVE-2023-2533 is a critical vulnerability published on June 20, 2023. 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.…
When was CVE-2023-2533 disclosed?
CVE-2023-2533 was first published in the National Vulnerability Database on June 20, 2023, with the most recent update on February 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-2533 actively exploited?
Yes. CISA added CVE-2023-2533 to the Known Exploited Vulnerabilities catalog on July 28, 2025, affecting PaperCut NG/MF. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2023-2533?
CVE-2023-2533 has a CVSS v3 base score of 8.4 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2023-2533?
CVE-2023-2533 affects PaperCut NG/MF. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2023-2533?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-2533, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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