CVE-2021-25394

MEDIUMNVD 6.49.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2023-06-29), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 6.4 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
6.4
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 0%CVSS: 6.4Exploit: NoneExposed: 0

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

A use after free vulnerability via race condition in MFC charger driver prior to SMR MAY-2021 Release 1 allows arbitrary write given a radio privilege is compromised.

CVSS v3
6.4
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
32.7%
KEV
⚠ Exploited

Published

June 11, 2021

Last Modified

October 30, 2025

Advisory Details (2)

Auto-updated Jun 13, 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-2021-25394
generic

Samsung Mobile Security

https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=5

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 55× in last 7d / 244× 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 459 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2021-25394?
CVE-2021-25394 is a medium vulnerability published on June 11, 2021. A use after free vulnerability via race condition in MFC charger driver prior to SMR MAY-2021 Release 1 allows arbitrary write given a radio privilege is compromised.
When was CVE-2021-25394 disclosed?
CVE-2021-25394 was first published in the National Vulnerability Database on June 11, 2021, 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-2021-25394 actively exploited?
Yes. CISA added CVE-2021-25394 to the Known Exploited Vulnerabilities catalog on June 29, 2023, affecting Samsung Mobile Devices. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2021-25394?
CVE-2021-25394 has a CVSS v3 base score of 6.4 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2021-25394?
CVE-2021-25394 affects Samsung Mobile Devices. 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-2021-25394?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-25394, 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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