CVE-2025-21042

CRITICALNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2025-11-10), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.8 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: 33%CVSS: 8.8Exploit: cisa kev · ssvc active · epss top5pctExposed: 0

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

Out-of-bounds write in libimagecodec.quram.so prior to SMR Apr-2025 Release 1 allows remote attackers to execute arbitrary code.

CVSS v3
8.8
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
33%
EPSS %ILE
98%
KEV
⚠ Exploited

Published

September 12, 2025

Last Modified

November 12, 2025

Advisory Details (3)

Auto-updated Jun 1, 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-2025-21042
generic🔴 Active Exploitation

LANDFALL: New Commercial-Grade Android Spyware in Exploit Chain Targeting Samsung Devices

https://unit42.paloaltonetworks.com/landfall-is-new-commercial-grade-android-spyware/
generic🔴 Active Exploitation

Samsung Mobile Security

https://security.samsungmobile.com/securityUpdate.smsb?year=2025&month=04

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 59× 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 968 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2025-21042?
CVE-2025-21042 is a critical vulnerability published on September 12, 2025. Out-of-bounds write in libimagecodec.quram.so prior to SMR Apr-2025 Release 1 allows remote attackers to execute arbitrary code.
When was CVE-2025-21042 disclosed?
CVE-2025-21042 was first published in the National Vulnerability Database on September 12, 2025, with the most recent update on November 12, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-21042 actively exploited?
Yes. CISA added CVE-2025-21042 to the Known Exploited Vulnerabilities catalog on November 10, 2025, 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-2025-21042?
CVE-2025-21042 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2025-21042?
CVE-2025-21042 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-2025-21042?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-21042, 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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