CVE-2026-21064

MEDIUMNVD 5.55.5—
EchelonGraph scoreHIGH confidence

Score 5.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-10. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

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

Improper access control in Weaver prior to SMR Aug-2026 Release 1 allows local attackers to cause device inoperability.

CVSS v3
5.5
EG Score
5.5(high)
EG Risk
25(Track)
EG Risk 25/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 19, 2026

Advisory Details (1)

Auto-updated Aug 10, 2026
No patch confirmed yet.
generic

Samsung Mobile Security

https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=08

Vendor Advisories for CVE-2026-21064(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 29× in last 7d / 47× 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. 2026-08-21 05:55 UTCEG score recompute
  2. 2026-08-21 05:55 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 03:38 UTCEG score recompute
  5. 2026-08-20 03:38 UTCGHSA enrichment
  6. 2026-08-19 17:03 UTCEPSS rescore
  7. 2026-08-19 01:20 UTCEG score recompute▼ 1.50
  8. 2026-08-19 01:20 UTCGHSA enrichment
  9. 2026-08-19 01:19 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM
  10. 2026-08-18 15:34 UTCEG score recompute
  11. 2026-08-18 15:34 UTCGHSA enrichment
  12. 2026-08-18 13:48 UTCEPSS rescore
  13. 2026-08-18 00:56 UTCEG score recompute
  14. 2026-08-18 00:56 UTCGHSA enrichment
  15. 2026-08-17 13:47 UTCEPSS rescore
  16. 2026-08-17 12:00 UTCGHSA enrichment
  17. 2026-08-16 23:30 UTCEG score recompute
  18. 2026-08-16 23:30 UTCGHSA enrichment
  19. 2026-08-16 14:56 UTCEPSS rescore
  20. 2026-08-16 10:59 UTCEG score recompute
  21. 2026-08-16 10:59 UTCGHSA enrichment
  22. 2026-08-16 02:14 UTCEPSS rescore
  23. 2026-08-15 22:29 UTCGHSA enrichment
  24. 2026-08-15 09:58 UTCEG score recompute
  25. 2026-08-15 09:58 UTCGHSA enrichment
Show 22 more
  1. 2026-08-15 01:30 UTCEPSS rescore
  2. 2026-08-14 21:27 UTCGHSA enrichment
  3. 2026-08-14 08:57 UTCEG score recompute
  4. 2026-08-14 08:57 UTCGHSA enrichment
  5. 2026-08-13 22:00 UTCEPSS rescore
  6. 2026-08-13 20:26 UTCGHSA enrichment
  7. 2026-08-13 07:55 UTCGHSA enrichment
  8. 2026-08-12 19:25 UTCEG score recompute
  9. 2026-08-12 19:25 UTCGHSA enrichment
  10. 2026-08-12 13:50 UTCEPSS rescore
  11. 2026-08-12 06:54 UTCGHSA enrichment
  12. 2026-08-11 18:24 UTCGHSA enrichment
  13. 2026-08-11 05:52 UTCEG score recompute
  14. 2026-08-11 05:52 UTCGHSA enrichment
  15. 2026-08-11 00:00 UTCEPSS rescore
  16. 2026-08-10 17:22 UTCEG score recompute
  17. 2026-08-10 17:22 UTCGHSA enrichment
  18. 2026-08-10 17:10 UTCEG score recompute
  19. 2026-08-10 17:10 UTCGHSA enrichment
  20. 2026-08-10 09:20 UTCEG score recompute
  21. 2026-08-10 08:16 UTCEG score recompute
  22. 2026-08-10 08:16 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-21064?
CVE-2026-21064 is a medium vulnerability published on August 10, 2026. Improper access control in Weaver prior to SMR Aug-2026 Release 1 allows local attackers to cause device inoperability.
When was CVE-2026-21064 disclosed?
CVE-2026-21064 was first published in the National Vulnerability Database on August 10, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-21064 actively exploited?
CVE-2026-21064 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 99.4% of all scored CVEs.
What is the CVSS score of CVE-2026-21064?
CVE-2026-21064 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-21064?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-21064, 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-2026-21064

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