CVE-2026-80117

HIGHPre-NVD 7.17.1—
EchelonGraph scoreHIGH confidence

Score 7.1 from GitHub Security Advisory published 2026-09-04. a secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

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

PassMark PerformanceTest before 11.1 build 1012, BurnInTest before 11.1 build 1000, and OSForensics before 11.1 build 1016 contain a privilege escalation vulnerability in DirectIo64.sys that allows local users to issue arbitrary IN and OUT instructions to any x86 I/O port due to missing allowlist or port validation on exposed IOCTLs. Attackers can obtain a device handle and write to sensitive ports including the PS/2 controller port, CPU reset ports, CMOS configuration ports, and interrupt controller ports to cause an immediate system reset or other hardware-level manipulation from a standard user account.

CVSS v3
7.1
EG Score
7.1(high)
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
2%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 8, 2026

Advisory Details (6)

Auto-updated Sep 4, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

PassMark PerformanceTest, BurnInTest, and OSForensics Arbitrary I/O Port Access via DirectIo64.sys | Advisories | VulnCheck

https://www.vulncheck.com/advisories/passmark-performancetest-burnintest-and-osforensics-arbitrary-i-o-port-access-via-directio64-sys
generic🟡 PoC Available

Reversing PassMark's DirectIo64.sys · dkom.dev

https://dkom.dev/posts/directio64-disclosure/
generic

OSForensics - What's new version history

https://www.osforensics.com/whats-new.html
generic

PassMark BurnInTest software - PC Reliability and Load Testing

https://www.passmark.com/products/burnintest/history.php
generic

PassMark PerformanceTest version history

https://www.passmark.com/products/performancetest/history.php
generic🟡 PoC Available

GitHub - floppywiggler/directio64-disclosure · GitHub

https://github.com/floppywiggler/directio64-disclosure

Vendor Advisories for CVE-2026-80117(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 27× in last 7d / 58× 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. 2026-09-19 06:22 UTCEG score recompute
  2. 2026-09-19 06:22 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 19:02 UTCGHSA enrichment
  5. 2026-09-18 07:42 UTCGHSA enrichment
  6. 2026-09-17 20:22 UTCEG score recompute
  7. 2026-09-17 20:22 UTCGHSA enrichment
  8. 2026-09-17 08:39 UTCGHSA enrichment
  9. 2026-09-16 21:19 UTCEG score recompute
  10. 2026-09-16 21:19 UTCGHSA enrichment
  11. 2026-09-16 14:08 UTCEPSS rescore
  12. 2026-09-16 09:42 UTCEG score recompute
  13. 2026-09-16 09:42 UTCGHSA enrichment
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-15 22:21 UTCGHSA enrichment
  16. 2026-09-15 10:59 UTCEG score recompute
  17. 2026-09-15 10:59 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-14 23:31 UTCGHSA enrichment
  21. 2026-09-14 12:08 UTCGHSA enrichment
  22. 2026-09-14 00:48 UTCEG score recompute
  23. 2026-09-14 00:48 UTCGHSA enrichment
  24. 2026-09-13 13:29 UTCGHSA enrichment
  25. 2026-09-13 02:10 UTCEG score recompute
Show 33 more
  1. 2026-09-13 02:10 UTCGHSA enrichment
  2. 2026-09-12 14:50 UTCGHSA enrichment
  3. 2026-09-12 03:31 UTCGHSA enrichment
  4. 2026-09-11 16:12 UTCEG score recompute
  5. 2026-09-11 16:12 UTCGHSA enrichment
  6. 2026-09-11 14:53 UTCEPSS rescore
  7. 2026-09-11 14:53 UTCEPSS rescore
  8. 2026-09-11 04:52 UTCGHSA enrichment
  9. 2026-09-10 17:32 UTCEG score recompute
  10. 2026-09-10 17:32 UTCGHSA enrichment
  11. 2026-09-10 06:12 UTCGHSA enrichment
  12. 2026-09-09 18:53 UTCGHSA enrichment
  13. 2026-09-09 07:33 UTCEG score recompute
  14. 2026-09-09 07:33 UTCGHSA enrichment
  15. 2026-09-08 22:01 UTCEPSS rescore
  16. 2026-09-08 20:14 UTCGHSA enrichment
  17. 2026-09-08 16:16 UTCGHSA enrichment
  18. 2026-09-08 02:44 UTCGHSA enrichment
  19. 2026-09-07 15:25 UTCGHSA enrichment
  20. 2026-09-07 04:05 UTCGHSA enrichment
  21. 2026-09-06 16:45 UTCEG score recompute
  22. 2026-09-06 16:45 UTCGHSA enrichment
  23. 2026-09-06 13:48 UTCEPSS rescore
  24. 2026-09-06 05:26 UTCGHSA enrichment
  25. 2026-09-05 18:06 UTCEG score recompute
  26. 2026-09-05 18:05 UTCGHSA enrichment
  27. 2026-09-05 15:31 UTCEPSS rescore
  28. 2026-09-05 06:41 UTCEG score recompute
  29. 2026-09-05 06:41 UTCGHSA enrichment
  30. 2026-09-04 19:18 UTCEG score recompute
  31. 2026-09-04 18:59 UTCEG score recompute
  32. 2026-09-04 18:39 UTCEG score recompute
  33. 2026-09-04 18:39 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-80117?
CVE-2026-80117 is a high vulnerability published on September 4, 2026. PassMark PerformanceTest before 11.1 build 1012, BurnInTest before 11.1 build 1000, and OSForensics before 11.1 build 1016 contain a privilege escalation vulnerability in DirectIo64.sys that allows local users to issue arbitrary IN and OUT instructions to any x86 I/O port due to missing allowlist…
When was CVE-2026-80117 disclosed?
CVE-2026-80117 was first published in the National Vulnerability Database on September 4, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-80117 actively exploited?
CVE-2026-80117 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 98.5% of all scored CVEs.
What is the CVSS score of CVE-2026-80117?
CVE-2026-80117 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-80117?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-80117, 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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