CVE-2026-16896

HIGHNVD 4.77.1▲
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-13. NVD baseline CVSS 4.7; sources differ by 2.4.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 5 sources updated this week
7.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.7Exploit: None knownExposed: 0

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

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local authenticated attacker to obtain unauthorized access to files due to a time-of-check time-of-use (TOCTOU) race condition.

CVSS v3
4.7
EG Score
7.1(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
0%
KEV
Not listed

Published

August 13, 2026

Last Modified

August 17, 2026

Advisory Details (1)

Auto-updated Aug 13, 2026
No patch confirmed yet.
generic

Security Bulletin: IBM i is Affected By Multiple Vulnerabilities in Network Authentication Service

https://www.ibm.com/support/pages/node/7283293

Vendor Advisories for CVE-2026-16896(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 33× in last 7d / 33× 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. 2026-08-20 10:20 UTCGHSA enrichment
  2. 2026-08-19 21:23 UTCEG score recompute
  3. 2026-08-19 21:23 UTCGHSA enrichment
  4. 2026-08-19 17:03 UTCEPSS rescore
  5. 2026-08-19 08:23 UTCGHSA enrichment
  6. 2026-08-18 19:26 UTCEG score recompute
  7. 2026-08-18 19:26 UTCGHSA enrichment
  8. 2026-08-18 13:48 UTCEPSS rescore
  9. 2026-08-18 06:26 UTCGHSA enrichment
  10. 2026-08-17 17:28 UTCEG score recompute
  11. 2026-08-17 17:28 UTCGHSA enrichment
  12. 2026-08-17 17:24 UTCNVD updateCVSS v3 → 4.7 · severity → MEDIUM
  13. 2026-08-17 13:47 UTCEPSS rescore
  14. 2026-08-17 12:22 UTCGHSA enrichment
  15. 2026-08-16 23:24 UTCEG score recompute
  16. 2026-08-16 23:24 UTCGHSA enrichment
  17. 2026-08-16 14:56 UTCEPSS rescore
  18. 2026-08-16 10:26 UTCEG score recompute
  19. 2026-08-16 10:26 UTCGHSA enrichment
  20. 2026-08-16 02:14 UTCEPSS rescore
  21. 2026-08-15 21:30 UTCGHSA enrichment
  22. 2026-08-15 08:33 UTCEG score recompute
  23. 2026-08-15 08:33 UTCGHSA enrichment
  24. 2026-08-15 01:30 UTCEPSS rescore
  25. 2026-08-14 19:36 UTCEG score recompute
Show 8 more
  1. 2026-08-14 19:36 UTCGHSA enrichment
  2. 2026-08-14 18:34 UTCEG score recompute
  3. 2026-08-14 18:34 UTCGHSA enrichment
  4. 2026-08-14 09:38 UTCEG score recompute
  5. 2026-08-14 09:38 UTCGHSA enrichment
  6. 2026-08-13 20:20 UTCEG score recompute
  7. 2026-08-13 20:02 UTCEG score recompute
  8. 2026-08-13 20:01 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-16896?
CVE-2026-16896 is a high vulnerability published on August 13, 2026. IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local authenticated attacker to obtain unauthorized access to files due to a time-of-check time-of-use (TOCTOU) race condition.
When was CVE-2026-16896 disclosed?
CVE-2026-16896 was first published in the National Vulnerability Database on August 13, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16896 actively exploited?
CVE-2026-16896 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 99.9% of all scored CVEs.
What is the CVSS score of CVE-2026-16896?
CVE-2026-16896 has a CVSS v3 base score of 4.7 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.1.
How do I remediate CVE-2026-16896?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16896, 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-2026-16896

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