CVE-2021-25370

CRITICALNVD 6.19.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-11-08), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 6.1 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 3 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictMitigate nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 0.9%CVSS: 6.1Exploit: cisa kev · ssvc activeExposed services: Not assessed

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

An incorrect implementation handling file descriptor in dpu driver prior to SMR Mar-2021 Release 1 results in memory corruption leading to kernel panic.

CVSS v3
6.1
EG Score
9.0CRITICALhigh confidence
EG Risk
81
EG Risk 81/100CISA 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
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Attend at medium and Act at high mission impact.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low, sooner than that at medium and as soon as possible at high mission impact, and watch the vendor's advisory for the fix.
EPSS PROB
0.9%
EPSS %ILE
58th
KEV
⚠ Exploited

CISA SSVCTrack at low, Attend at medium and Act at high mission impact.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low, sooner than that at medium and as soon as possible at high mission impact, and watch the vendor's advisory for the fix.

Exploitation active (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

March 26, 2021

Last Modified

January 14, 2026

Advisory Details (3)

Auto-updated Jun 13, 2026
⚠️ Active exploitation confirmed. No fix on record yet. Sources: cisa.
cisa🔴 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-2021-25370
generic

Samsung Mobile Security

https://security.samsungmobile.com/securityUpdate.smsb
generic
https://security.samsungmobile.com

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 54× in last 7d / 248× 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 1,075 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2021-25370?
CVE-2021-25370 is a critical vulnerability published on March 26, 2021. An incorrect implementation handling file descriptor in dpu driver prior to SMR Mar-2021 Release 1 results in memory corruption leading to kernel panic.
When was CVE-2021-25370 disclosed?
CVE-2021-25370 was first published on March 26, 2021, with the most recent update on January 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-25370 actively exploited?
Yes. CISA added CVE-2021-25370 to the Known Exploited Vulnerabilities catalog on November 8, 2022, affecting Samsung Mobile Devices. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate attention. No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation, and watch the vendor's advisory for the fix.
What is the CVSS score of CVE-2021-25370?
CVE-2021-25370 has a CVSS v3 base score of 6.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0 (CRITICAL).
Which products are affected by CVE-2021-25370?
CVE-2021-25370 affects Samsung Mobile Devices.
How do I remediate CVE-2021-25370?
No fix for CVE-2021-25370 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix.

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