CVE-2026-21384

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-07-06. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

Memory Corruption when updating prepared commands with invalid port indices based on user space input exceeds supported read client limits.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
0%
KEV
Not listed

Published

July 6, 2026

Last Modified

July 7, 2026

Advisory Details (1)

Auto-updated Jul 7, 2026
No patch confirmed yet.
generic

Qualcomm Documentation

https://docs.qualcomm.com/product/publicresources/securitybulletin/july-2026-bulletin.html

Vendor Advisories for CVE-2026-21384(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 5× in last 7d / 32× 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. 2026-09-11 14:52 UTCEPSS rescore
  2. 2026-09-10 09:34 UTCEPSS rescore
  3. 2026-09-07 16:01 UTCEPSS rescore
  4. 2026-09-05 23:04 UTCEG score recompute
  5. 2026-09-05 23:04 UTCGHSA enrichment
  6. 2026-09-04 05:06 UTCEPSS rescore
  7. 2026-09-02 14:11 UTCEPSS rescore
  8. 2026-09-01 13:53 UTCEPSS rescore
  9. 2026-08-30 08:00 UTCEG score recompute
  10. 2026-08-30 08:00 UTCGHSA enrichment
  11. 2026-08-30 01:22 UTCEPSS rescore
  12. 2026-08-28 21:41 UTCEPSS rescore
  13. 2026-08-27 21:58 UTCEG score recompute
  14. 2026-08-27 21:58 UTCGHSA enrichment
  15. 2026-08-27 14:25 UTCEPSS rescore
  16. 2026-08-26 14:46 UTCEPSS rescore
  17. 2026-08-26 13:54 UTCGHSA enrichment
  18. 2026-08-24 20:44 UTCEG score recompute
  19. 2026-08-24 20:44 UTCGHSA enrichment
  20. 2026-08-23 21:25 UTCGHSA enrichment
  21. 2026-08-22 23:42 UTCGHSA enrichment
  22. 2026-08-22 02:00 UTCGHSA enrichment
  23. 2026-08-21 04:17 UTCGHSA enrichment
  24. 2026-08-20 06:26 UTCGHSA enrichment
  25. 2026-08-19 08:40 UTCGHSA enrichment
Show 47 more
  1. 2026-08-18 10:58 UTCGHSA enrichment
  2. 2026-08-17 10:34 UTCGHSA enrichment
  3. 2026-08-16 12:51 UTCGHSA enrichment
  4. 2026-08-15 15:09 UTCGHSA enrichment
  5. 2026-08-14 17:26 UTCGHSA enrichment
  6. 2026-08-13 19:27 UTCGHSA enrichment
  7. 2026-08-12 21:44 UTCGHSA enrichment
  8. 2026-08-12 00:02 UTCGHSA enrichment
  9. 2026-08-11 02:19 UTCGHSA enrichment
  10. 2026-08-10 04:36 UTCGHSA enrichment
  11. 2026-08-09 06:54 UTCGHSA enrichment
  12. 2026-08-08 09:12 UTCGHSA enrichment
  13. 2026-08-07 11:29 UTCGHSA enrichment
  14. 2026-08-06 13:47 UTCEG score recompute
  15. 2026-08-06 13:47 UTCGHSA enrichment
  16. 2026-08-05 19:17 UTCEPSS rescore
  17. 2026-08-05 15:58 UTCGHSA enrichment
  18. 2026-08-04 14:33 UTCGHSA enrichment
  19. 2026-08-03 16:50 UTCGHSA enrichment
  20. 2026-08-02 19:08 UTCGHSA enrichment
  21. 2026-08-01 21:25 UTCGHSA enrichment
  22. 2026-07-31 23:42 UTCGHSA enrichment
  23. 2026-07-31 01:58 UTCEG score recompute
  24. 2026-07-31 01:58 UTCGHSA enrichment
  25. 2026-07-30 03:43 UTCGHSA enrichment
  26. 2026-07-29 05:59 UTCGHSA enrichment
  27. 2026-07-28 08:11 UTCGHSA enrichment
  28. 2026-07-27 10:29 UTCGHSA enrichment
  29. 2026-07-26 12:47 UTCEG score recompute
  30. 2026-07-26 12:46 UTCGHSA enrichment
  31. 2026-07-23 03:06 UTCEG score recompute
  32. 2026-07-16 19:33 UTCGHSA enrichment
  33. 2026-07-15 21:40 UTCGHSA enrichment
  34. 2026-07-14 23:56 UTCGHSA enrichment
  35. 2026-07-14 02:14 UTCGHSA enrichment
  36. 2026-07-13 04:30 UTCGHSA enrichment
  37. 2026-07-12 06:47 UTCGHSA enrichment
  38. 2026-07-11 09:05 UTCGHSA enrichment
  39. 2026-07-10 11:21 UTCGHSA enrichment
  40. 2026-07-09 13:39 UTCGHSA enrichment
  41. 2026-07-08 15:57 UTCGHSA enrichment
  42. 2026-07-08 15:15 UTCEPSS rescore
  43. 2026-07-08 15:15 UTCEPSS rescore
  44. 2026-07-07 18:13 UTCGHSA enrichment
  45. 2026-07-07 13:46 UTCEPSS rescore
  46. 2026-07-06 20:30 UTCEG score recompute
  47. 2026-07-06 20:29 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-21384?
CVE-2026-21384 is a medium vulnerability published on July 6, 2026. Memory Corruption when updating prepared commands with invalid port indices based on user space input exceeds supported read client limits.
When was CVE-2026-21384 disclosed?
CVE-2026-21384 was first published in the National Vulnerability Database on July 6, 2026, with the most recent update on July 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-21384 actively exploited?
CVE-2026-21384 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 99.8% of all scored CVEs.
What is the CVSS score of CVE-2026-21384?
CVE-2026-21384 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-21384?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-21384, 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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