CVE-2025-53827

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6% (47th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 9.1Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

ownCloud Core is the server-side component of the file storage, synchronization, and sharing application ownCloud Classic. In versions prior to 10.15.3, the Updater on ownCloud 10 before 10.15.3 has an exposed dangerous method or function. Attackers with administrative privileges may leverage functionality to execute arbitrary code. This issue has been fixed in version 10.15.3.

CVSS v3
9.1
EG Score
9.1CRITICALmedium confidence
EG Risk
41
EG Risk 41/100CISA SSVC

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
Severity91% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: The CVE record names the fixed release. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
47th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

The CVE record names the fixed release. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 6, 2026

Last Modified

October 6, 2026

Advisory Details (1)

Auto-updated Sep 16, 2026
Fix named in the CVE record. Sources: github.
githubMentions a patch (unverified)

[Classic] Updater on ownCloud 10 before 10.15.3 has an exposed dangerous method or function · Advisory · owncloud/security-advisories · GitHub

https://github.com/owncloud/security-advisories/security/advisories/GHSA-hvcx-ph66-mmvw

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 37× 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 149 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2025-53827?
CVE-2025-53827 is a critical vulnerability published on July 6, 2026. ownCloud Core is the server-side component of the file storage, synchronization, and sharing application ownCloud Classic. In versions prior to 10.15.3, the Updater on ownCloud 10 before 10.15.3 has an exposed dangerous method or function. Attackers with administrative privileges may leverage…
When was CVE-2025-53827 disclosed?
CVE-2025-53827 was first published on July 6, 2026, with the most recent update on October 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-53827 actively exploited?
CVE-2025-53827 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (47th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-53827?
CVE-2025-53827 has a CVSS base score of 9.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2025-53827?
The CVE record for CVE-2025-53827 names the fix: "This issue has been fixed in version 10.15.3."

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