CVE-2025-70290

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-26. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 5 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

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

An issue was discovered in Denx U-Boot before 2026.04. An integer overflow vulnerability in the ZFS filesystem support can be triggered by malformed on-disk metadata. The issue may result in incorrect memory allocation followed by out-of-bounds memory access, potentially leading to a crash or arbitrary code execution during the boot process.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

August 26, 2026

Last Modified

August 27, 2026

Advisory Details (2)

Auto-updated Aug 27, 2026
Patch available.
generic Patch Available

U-Boot integer overflows in filesystem parsing · GitHub

https://gist.github.com/c0zy1/4d9648d10a5ff07bda2771ea1298e469
generic

U-Boot – deinde.dev

http://u-boot.com

Vendor Advisories for CVE-2025-70290(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 26× in last 7d / 26× 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.

  1. 2026-08-30 05:50 UTCGHSA enrichment
  2. 2026-08-30 01:41 UTCEG score recompute
  3. 2026-08-30 01:41 UTCGHSA enrichment
  4. 2026-08-30 01:21 UTCEPSS rescore
  5. 2026-08-29 21:33 UTCGHSA enrichment
  6. 2026-08-29 17:25 UTCGHSA enrichment
  7. 2026-08-29 12:32 UTCGHSA enrichment
  8. 2026-08-29 08:21 UTCGHSA enrichment
  9. 2026-08-29 04:09 UTCGHSA enrichment
  10. 2026-08-28 23:59 UTCEG score recompute
  11. 2026-08-28 23:59 UTCGHSA enrichment
  12. 2026-08-28 21:40 UTCEPSS rescore
  13. 2026-08-28 17:20 UTCGHSA enrichment
  14. 2026-08-28 13:10 UTCGHSA enrichment
  15. 2026-08-28 09:01 UTCGHSA enrichment
  16. 2026-08-28 04:52 UTCGHSA enrichment
  17. 2026-08-28 00:44 UTCEG score recompute
  18. 2026-08-28 00:44 UTCGHSA enrichment
  19. 2026-08-27 20:28 UTCGHSA enrichment
  20. 2026-08-27 20:16 UTCEG score recompute▲ 9.80
  21. 2026-08-27 20:16 UTCGHSA enrichment
  22. 2026-08-27 20:13 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  23. 2026-08-27 14:24 UTCEPSS rescore
  24. 2026-08-26 20:24 UTCNVD update
  25. 2026-08-26 19:27 UTCEG score recompute
Show 1 more
  1. 2026-08-26 19:26 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-70290?
CVE-2025-70290 is a critical vulnerability published on August 26, 2026. An issue was discovered in Denx U-Boot before 2026.04. An integer overflow vulnerability in the ZFS filesystem support can be triggered by malformed on-disk metadata. The issue may result in incorrect memory allocation followed by out-of-bounds memory access, potentially leading to a crash or…
When was CVE-2025-70290 disclosed?
CVE-2025-70290 was first published in the National Vulnerability Database on August 26, 2026, with the most recent update on August 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-70290 actively exploited?
CVE-2025-70290 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 62.0% of all scored CVEs.
What is the CVSS score of CVE-2025-70290?
CVE-2025-70290 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2025-70290?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-70290, 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-2025-70290

Explore →

Is Your Infrastructure Affected by CVE-2025-70290?

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

Start Free Scan →Browse All CVEs