CVE-2026-21053

MEDIUMPre-NVD 5.15.1—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 95% of all CVEs by exploit prediction. 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
Trending — 3 sources updated this week
5.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.1Exploit: None knownExposed: 0

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

Improper input validation in Samsung Email prior to version 6.2.13.1 allows local attackers to create arbitrary files within the application sandbox.

CVSS v3
5.1
EG Score
5.1(medium)
EG Risk
23(Track)
EG Risk 23/100SSVC: Track

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
Severity51% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

July 10, 2026

Last Modified

July 10, 2026

Advisory Details (1)

Auto-updated Jul 10, 2026
No patch confirmed yet.
generic

Samsung Mobile Security

https://security.samsungmobile.com/serviceWeb.smsb?year=2026&month=07

Vendor Advisories for CVE-2026-21053(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Data Freshness Timeline

(refreshed 15× in last 7d / 72× 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 110 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-21053?
CVE-2026-21053 is a medium vulnerability published on July 10, 2026. Improper input validation in Samsung Email prior to version 6.2.13.1 allows local attackers to create arbitrary files within the application sandbox.
When was CVE-2026-21053 disclosed?
CVE-2026-21053 was first published in the National Vulnerability Database on July 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-21053 actively exploited?
CVE-2026-21053 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 94.7% of all scored CVEs.
What is the CVSS score of CVE-2026-21053?
CVE-2026-21053 has a CVSS v3 base score of 5.1 (NVD).
How do I remediate CVE-2026-21053?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-21053, 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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