CVE-2019-9875

HIGHNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2025-03-26), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.8 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
8.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 14%CVSS: 8.8Exploit: NoneExposed: 0

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

Deserialization of Untrusted Data in the anti CSRF module in Sitecore through 9.1 allows an authenticated attacker to execute arbitrary code by sending a serialized .NET object in an HTTP POST parameter.

CVSS v3
8.8
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
96.2%
KEV
⚠ Exploited

Published

May 31, 2019

Last Modified

November 7, 2025

Advisory Details (2)

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-2019-9875
generic🔴 Active Exploitation

Publications

https://www.synacktiv.com/blog.html

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 63× in last 7d / 241× 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 432 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2019-9875?
CVE-2019-9875 is a high vulnerability published on May 31, 2019. Deserialization of Untrusted Data in the anti CSRF module in Sitecore through 9.1 allows an authenticated attacker to execute arbitrary code by sending a serialized .NET object in an HTTP POST parameter.
When was CVE-2019-9875 disclosed?
CVE-2019-9875 was first published in the National Vulnerability Database on May 31, 2019, with the most recent update on November 7, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-9875 actively exploited?
Yes. CISA added CVE-2019-9875 to the Known Exploited Vulnerabilities catalog on March 26, 2025, affecting Sitecore CMS and Experience Platform (XP). KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2019-9875?
CVE-2019-9875 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2019-9875?
CVE-2019-9875 affects Sitecore CMS and Experience Platform (XP). 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-2019-9875?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-9875, 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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