CVE-2021-25394

CRITICALNVD 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
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 0%CVSS: 6.4Exploit: cisa kev · ssvc activeExposed: 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 PROB
0%
EPSS %ILE
34%
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 63× in last 7d / 263× 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 960 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2021-25394?
CVE-2021-25394 is a critical 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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