CVE-2026-81539

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-24. A secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 8.8Exploit: None knownExposed services: Not assessed

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

IBM DataStage on Cloud Pak for Data 5.4.0.0 could allow a remote authenticated attacker to execute arbitrary code due to improper neutralization of special elements used in an OS command.

CVSS v3
8.8
EG Score
8.8HIGHhigh confidence
EG Risk
40
EG Risk 40/100CISA SSVC

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
Severity88% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
35th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 24, 2026

Last Modified

September 24, 2026

Advisory Details (1)

Auto-updated Sep 24, 2026
No patch confirmed yet.
generic

Security Bulletin: DataStage on Cloud Pak for Data has several vulnerabilities

https://www.ibm.com/support/pages/node/7288649

Vendor Advisories for CVE-2026-81539(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 26× in last 7d / 40× 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. 2026-10-04 03:13 UTCGHSA enrichment
  2. 2026-10-03 14:50 UTCEG score recompute
  3. 2026-10-03 14:50 UTCGHSA enrichment
  4. 2026-10-03 14:26 UTCEPSS rescore
  5. 2026-10-03 02:27 UTCEG score recompute
  6. 2026-10-03 02:27 UTCGHSA enrichment
  7. 2026-10-02 17:57 UTCEPSS rescore
  8. 2026-10-02 14:04 UTCGHSA enrichment
  9. 2026-10-02 01:41 UTCEG score recompute
  10. 2026-10-02 01:40 UTCGHSA enrichment
  11. 2026-10-01 19:50 UTCEPSS rescore
  12. 2026-10-01 13:13 UTCGHSA enrichment
  13. 2026-10-01 00:50 UTCEG score recompute
  14. 2026-10-01 00:50 UTCGHSA enrichment
  15. 2026-09-30 15:04 UTCEPSS rescore
  16. 2026-09-30 12:27 UTCGHSA enrichment
  17. 2026-09-30 00:01 UTCEG score recompute
  18. 2026-09-30 00:01 UTCGHSA enrichment
  19. 2026-09-29 11:33 UTCGHSA enrichment
  20. 2026-09-28 23:09 UTCEG score recompute
  21. 2026-09-28 23:09 UTCGHSA enrichment
  22. 2026-09-28 13:52 UTCEPSS rescore
  23. 2026-09-28 10:44 UTCGHSA enrichment
  24. 2026-09-27 22:21 UTCEG score recompute
  25. 2026-09-27 22:21 UTCGHSA enrichment
Show 15 more
  1. 2026-09-27 13:48 UTCEPSS rescore
  2. 2026-09-27 09:58 UTCGHSA enrichment
  3. 2026-09-26 21:35 UTCEG score recompute
  4. 2026-09-26 21:35 UTCGHSA enrichment
  5. 2026-09-26 15:59 UTCEPSS rescore
  6. 2026-09-26 09:10 UTCEG score recompute
  7. 2026-09-26 09:10 UTCGHSA enrichment
  8. 2026-09-25 20:44 UTCGHSA enrichment
  9. 2026-09-25 08:20 UTCGHSA enrichment
  10. 2026-09-24 19:55 UTCEG score recompute
  11. 2026-09-24 19:55 UTCGHSA enrichment
  12. 2026-09-24 15:28 UTCEG score recompute
  13. 2026-09-24 15:02 UTCEG score recompute
  14. 2026-09-24 14:48 UTCEG score recompute
  15. 2026-09-24 14:47 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-81539?
CVE-2026-81539 is a high vulnerability published on September 24, 2026. IBM DataStage on Cloud Pak for Data 5.4.0.0 could allow a remote authenticated attacker to execute arbitrary code due to improper neutralization of special elements used in an OS command.
When was CVE-2026-81539 disclosed?
CVE-2026-81539 was first published on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-81539 actively exploited?
CVE-2026-81539 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (35th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-81539?
CVE-2026-81539 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-81539?
No fix for CVE-2026-81539 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-81539 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-81539

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