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 44× in last 7d / 235× 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 500 total refreshes for this CVE.

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

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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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