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
43%
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 57× 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 821 total refreshes for this CVE.

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

Related CVEs(same CWE)

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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