CVE-2021-25489

CRITICALNVD 3.39.0▲
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 3.3 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: 1%CVSS: 3.3Exploit: cisa kev · ssvc activeExposed: 0

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

Assuming radio permission is gained, missing input validation in modem interface driver prior to SMR Oct-2021 Release 1 results in format string bug leading to kernel panic.

CVSS v3
3.3
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
1%
EPSS %ILE
44%
KEV
⚠ Exploited

Published

October 6, 2021

Last Modified

October 30, 2025

References (3)

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 62× in last 7d / 254× 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 919 total refreshes for this CVE.

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

Frequently asked(6)

What is CVE-2021-25489?
CVE-2021-25489 is a critical vulnerability published on October 6, 2021. Assuming radio permission is gained, missing input validation in modem interface driver prior to SMR Oct-2021 Release 1 results in format string bug leading to kernel panic.
When was CVE-2021-25489 disclosed?
CVE-2021-25489 was first published in the National Vulnerability Database on October 6, 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-2021-25489 actively exploited?
Yes. CISA added CVE-2021-25489 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-2021-25489?
CVE-2021-25489 has a CVSS v3 base score of 3.3 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2021-25489?
CVE-2021-25489 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-2021-25489?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-25489, 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.

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