CVE-2026-13433

CRITICALNVD 9.69.6—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.6 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 98% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
9.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.6Exploit: None knownExposed: 0

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

IBM i Access Client Solutions 1.1.2.0 through 1.1.9.13 (ACS) is vulnerable to downloading unverified product code when configured to update from an IBM i. A bad actor could use this vulnerablity to run compromised code on the ACS user's workstation.

CVSS v3
9.6
EG Score
9.6(medium)
EG Risk
43(Track)
EG Risk 43/100SSVC: 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
Severity96% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

August 12, 2026

Last Modified

August 18, 2026

Advisory Details (1)

Auto-updated Aug 12, 2026
No patch confirmed yet.
generic

Security Bulletin: IBM i Access Client Solutions (ACS) is Affected By Multiple Vulnerabilities

https://www.ibm.com/support/pages/node/7282954

Vendor Advisories for CVE-2026-13433(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 38× in last 7d / 49× 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 05:27 UTCGHSA enrichment
  2. 2026-08-21 01:06 UTCEG score recompute
  3. 2026-08-21 01:06 UTCGHSA enrichment
  4. 2026-08-20 22:55 UTCEPSS rescore
  5. 2026-08-20 20:45 UTCGHSA enrichment
  6. 2026-08-20 16:25 UTCGHSA enrichment
  7. 2026-08-20 12:05 UTCGHSA enrichment
  8. 2026-08-20 07:39 UTCGHSA enrichment
  9. 2026-08-20 03:18 UTCGHSA enrichment
  10. 2026-08-19 22:54 UTCGHSA enrichment
  11. 2026-08-19 18:33 UTCEG score recompute
  12. 2026-08-19 18:33 UTCGHSA enrichment
  13. 2026-08-19 17:03 UTCEPSS rescore
  14. 2026-08-19 12:36 UTCGHSA enrichment
  15. 2026-08-19 08:16 UTCGHSA enrichment
  16. 2026-08-19 03:56 UTCGHSA enrichment
  17. 2026-08-18 23:36 UTCGHSA enrichment
  18. 2026-08-18 19:16 UTCGHSA enrichment
  19. 2026-08-18 14:55 UTCEG score recompute▲ 1.30
  20. 2026-08-18 14:55 UTCGHSA enrichment
  21. 2026-08-18 14:54 UTCNVD updateCVSS v3 → 9.6 · severity → CRITICAL
  22. 2026-08-18 13:48 UTCEPSS rescore
  23. 2026-08-18 07:27 UTCGHSA enrichment
  24. 2026-08-17 19:37 UTCGHSA enrichment
  25. 2026-08-17 07:47 UTCGHSA enrichment
Show 24 more
  1. 2026-08-16 19:58 UTCEG score recompute
  2. 2026-08-16 19:58 UTCGHSA enrichment
  3. 2026-08-16 14:56 UTCEPSS rescore
  4. 2026-08-16 08:08 UTCEG score recompute
  5. 2026-08-16 08:08 UTCGHSA enrichment
  6. 2026-08-16 02:14 UTCEPSS rescore
  7. 2026-08-15 20:19 UTCGHSA enrichment
  8. 2026-08-15 08:30 UTCEG score recompute
  9. 2026-08-15 08:30 UTCGHSA enrichment
  10. 2026-08-15 01:30 UTCEPSS rescore
  11. 2026-08-14 20:40 UTCGHSA enrichment
  12. 2026-08-14 08:51 UTCEG score recompute
  13. 2026-08-14 08:51 UTCGHSA enrichment
  14. 2026-08-13 22:00 UTCEPSS rescore
  15. 2026-08-13 21:01 UTCGHSA enrichment
  16. 2026-08-13 15:26 UTCEG score recompute
  17. 2026-08-13 15:26 UTCGHSA enrichment
  18. 2026-08-13 14:24 UTCEG score recompute
  19. 2026-08-13 14:24 UTCGHSA enrichment
  20. 2026-08-13 09:09 UTCEG score recompute
  21. 2026-08-13 09:09 UTCGHSA enrichment
  22. 2026-08-12 21:20 UTCEG score recompute
  23. 2026-08-12 21:01 UTCEG score recompute
  24. 2026-08-12 21:00 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-13433?
CVE-2026-13433 is a critical vulnerability published on August 12, 2026. IBM i Access Client Solutions 1.1.2.0 through 1.1.9.13 (ACS) is vulnerable to downloading unverified product code when configured to update from an IBM i. A bad actor could use this vulnerablity to run compromised code on the ACS user's workstation.
When was CVE-2026-13433 disclosed?
CVE-2026-13433 was first published in the National Vulnerability Database on August 12, 2026, with the most recent update on August 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-13433 actively exploited?
CVE-2026-13433 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 98.3% of all scored CVEs.
What is the CVSS score of CVE-2026-13433?
CVE-2026-13433 has a CVSS v3 base score of 9.6 (NVD).
How do I remediate CVE-2026-13433?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-13433, 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-2026-13433

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