CVE-2025-70101

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-06-03. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this weekElevated
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: Elevated riskExposed: 0

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

An out-of-bounds read in the ext4_ext_binsearch_idx function in src/ext4_extent.c of the lwext4 1.0.0 library allows attackers to cause a denial of service by supplying a specially crafted ext4 filesystem image. The vulnerability occurs due to insufficient validation of extent header fields before performing a binary search over extent index entries, which can result in invalid pointer calculations and an out-of-bounds memory read during extent tree traversal.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: Track

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
Severity65% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

June 3, 2026

Last Modified

July 22, 2026

Advisory Details (3)

Auto-updated Jun 14, 2026
No patch confirmed yet.
generic

[security] lwext4/include/ext4_dir.h Out-of-Bounds Read in ext4_ext_binsearch_idx · Issue #91 · gkostka/lwext4 · GitHub

https://github.com/gkostka/lwext4/issues/91
generic

sigdevel: "Security Advisory: CVE-2025-70101 - Out-of-Bounds…" - Infosec Exchange

https://infosec.exchange/@sigdevel/116668958927817708
generic

pocs/res/lwext4/3/sig11_lwext4_ext4_extent_815 at main · sigdevel/pocs · GitHub

https://github.com/sigdevel/pocs/blob/main/res/lwext4/3/sig11_lwext4_ext4_extent_815

Vendor Advisories for CVE-2025-70101(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 35× 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 201 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-70101?
CVE-2025-70101 is a medium vulnerability published on June 3, 2026. An out-of-bounds read in the ext4extbinsearchidx function in src/ext4extent.c of the lwext4 1.0.0 library allows attackers to cause a denial of service by supplying a specially crafted ext4 filesystem image. The vulnerability occurs due to insufficient validation of extent header fields before…
When was CVE-2025-70101 disclosed?
CVE-2025-70101 was first published in the National Vulnerability Database on June 3, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-70101 actively exploited?
CVE-2025-70101 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 78.2% of all scored CVEs.
What is the CVSS score of CVE-2025-70101?
CVE-2025-70101 has a CVSS v3.1 base score of 6.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2025-70101?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-70101, 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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