CVE-2025-53690

CRITICALNVD 9.09.0—
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2025-09-04), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.0 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: 51%CVSS: 9.0Exploit: cisa kev · ssvc active · epss top5pct · epss high · public exploitExposed: 0

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

Deserialization of Untrusted Data vulnerability in Sitecore Experience Manager (XM), Sitecore Experience Platform (XP) allows Code Injection.This issue affects Experience Manager (XM): through 9.0; Experience Platform (XP): through 9.0.

CVSS v3
9.0
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
51%
EPSS %ILE
99%
KEV
⚠ Exploited

Published

September 3, 2025

Last Modified

October 30, 2025

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-2025-53690
generic

%kb_name - %short_descr - Knowledge Portal

https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003865
generic🔴 Active Exploitation

ViewState Deserialization Zero-Day Vulnerability in Sitecore Products (CVE-2025-53690) | Google Cloud Blog

https://cloud.google.com/blog/topics/threat-intelligence/viewstate-deserialization-zero-day-vulnerability

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 55× in last 7d / 230× 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 849 total refreshes for this CVE.

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

Publicly available exploits

(3 references)

Working exploit code is in the public domain (3 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCErikLearningSec/CVE-2025-53690-POC
    First seen Nov 5, 2025

    CVE-2025-53690 POC

    Open source ↗
  • GitHub PoCm0d0ri205/CVE-2025-53690-Analysis
    First seen Sep 7, 2025

    This is CVE-2025-53690 Analysis Documents.

    Open source ↗
  • GitHub PoCrxerium/CVE-2025-53690
    First seen Sep 4, 2025

    Detection for CVE-2025-53690

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2025-53690?
CVE-2025-53690 is a critical vulnerability published on September 3, 2025. Deserialization of Untrusted Data vulnerability in Sitecore Experience Manager (XM), Sitecore Experience Platform (XP) allows Code Injection.This issue affects Experience Manager (XM): through 9.0; Experience Platform (XP): through 9.0.
When was CVE-2025-53690 disclosed?
CVE-2025-53690 was first published in the National Vulnerability Database on September 3, 2025, with the most recent update on October 30, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-53690 actively exploited?
Yes. CISA added CVE-2025-53690 to the Known Exploited Vulnerabilities catalog on September 4, 2025, affecting Sitecore Multiple Products. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2025-53690?
CVE-2025-53690 has a CVSS v3 base score of 9.0 (NVD).
Which products are affected by CVE-2025-53690?
CVE-2025-53690 affects Sitecore Multiple Products. 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-2025-53690?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-53690, 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

Explore the affected products and dependency analysis for CVE-2025-53690

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