CVE-2023-26359

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2023-08-21), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 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
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 18%CVSS: 9.8Exploit: 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.

Adobe ColdFusion versions 2018 Update 15 (and earlier) and 2021 Update 5 (and earlier) are affected by a Deserialization of Untrusted Data vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue does not require user interaction.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

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
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS PROB
18%
EPSS %ILE
97%
KEV
⚠ Exploited

Published

March 23, 2023

Last Modified

October 23, 2025

Advisory Details (1)

Auto-updated Jul 28, 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-2023-26359

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 44× in last 7d / 218× 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 443 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2023-26359?
CVE-2023-26359 is a critical vulnerability published on March 23, 2023. Adobe ColdFusion versions 2018 Update 15 (and earlier) and 2021 Update 5 (and earlier) are affected by a Deserialization of Untrusted Data vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue does not require user interaction.
When was CVE-2023-26359 disclosed?
CVE-2023-26359 was first published in the National Vulnerability Database on March 23, 2023, with the most recent update on October 23, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-26359 actively exploited?
Yes. CISA added CVE-2023-26359 to the Known Exploited Vulnerabilities catalog on August 21, 2023, affecting Adobe ColdFusion. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2023-26359?
CVE-2023-26359 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2023-26359?
CVE-2023-26359 affects Adobe ColdFusion. 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-2023-26359?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-26359, 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.

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