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: 0%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
0%
EPSS %ILE
40%
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 44× in last 7d / 229× 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 466 total refreshes for this CVE.

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

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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2021-25489

Explore →

Is Your Infrastructure Affected by CVE-2021-25489?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs