CVE-2026-11728

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-15. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

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

IBM MQ 9.1.0.0 through 9.1.0.37 LTS, 9.2.0.0 through 9.2.0.43 LTS, 9.3.0.0 through 9.3.0.41 LTS, 9.3.0.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.25 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 could allow a remote attacker to cause a denial of service or potentially execute arbitrary code in the client due to a heap buffer overflow when receiving messages from a malicious queue manager or through a man-in-the-middle attack.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
26%
KEV
Not listed

Published

September 15, 2026

Last Modified

September 16, 2026

Advisory Details (1)

Auto-updated Sep 15, 2026
No patch confirmed yet.
generic

Security Bulletin: IBM MQ .NET client is vulnerable to remote code execution (CVE-2026-11728)

https://www.ibm.com/support/pages/node/7284943

Vendor Advisories for CVE-2026-11728(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 23× in last 7d / 39× 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. 2026-09-25 11:04 UTCGHSA enrichment
  2. 2026-09-24 22:06 UTCEG score recompute
  3. 2026-09-24 22:06 UTCGHSA enrichment
  4. 2026-09-24 09:08 UTCGHSA enrichment
  5. 2026-09-23 20:10 UTCEG score recompute
  6. 2026-09-23 20:10 UTCGHSA enrichment
  7. 2026-09-23 13:47 UTCEPSS rescore
  8. 2026-09-23 07:12 UTCGHSA enrichment
  9. 2026-09-22 18:14 UTCEG score recompute
  10. 2026-09-22 18:14 UTCGHSA enrichment
  11. 2026-09-22 05:16 UTCEG score recompute
  12. 2026-09-22 05:16 UTCGHSA enrichment
  13. 2026-09-21 16:18 UTCGHSA enrichment
  14. 2026-09-21 03:20 UTCEG score recompute
  15. 2026-09-21 03:20 UTCGHSA enrichment
  16. 2026-09-20 20:15 UTCEPSS rescore
  17. 2026-09-20 14:21 UTCGHSA enrichment
  18. 2026-09-20 01:22 UTCEG score recompute
  19. 2026-09-20 01:22 UTCGHSA enrichment
  20. 2026-09-19 12:24 UTCGHSA enrichment
  21. 2026-09-18 23:26 UTCEG score recompute
  22. 2026-09-18 23:26 UTCGHSA enrichment
  23. 2026-09-18 19:27 UTCEPSS rescore
  24. 2026-09-18 10:29 UTCGHSA enrichment
  25. 2026-09-17 21:31 UTCEG score recompute
Show 14 more
  1. 2026-09-17 21:31 UTCGHSA enrichment
  2. 2026-09-17 08:33 UTCGHSA enrichment
  3. 2026-09-16 19:35 UTCGHSA enrichment
  4. 2026-09-16 17:55 UTCEG score recompute
  5. 2026-09-16 17:55 UTCGHSA enrichment
  6. 2026-09-16 04:19 UTCEG score recompute
  7. 2026-09-16 04:19 UTCGHSA enrichment
  8. 2026-09-15 19:37 UTCEG score recompute
  9. 2026-09-15 19:37 UTCGHSA enrichment
  10. 2026-09-15 18:40 UTCEG score recompute
  11. 2026-09-15 18:40 UTCGHSA enrichment
  12. 2026-09-15 18:32 UTCEG score recompute
  13. 2026-09-15 17:48 UTCEG score recompute
  14. 2026-09-15 17:47 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-11728?
CVE-2026-11728 is a high vulnerability published on September 15, 2026. IBM MQ 9.1.0.0 through 9.1.0.37 LTS, 9.2.0.0 through 9.2.0.43 LTS, 9.3.0.0 through 9.3.0.41 LTS, 9.3.0.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.25 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 could allow a remote attacker to cause a denial of service or potentially execute arbitrary code in the…
When was CVE-2026-11728 disclosed?
CVE-2026-11728 was first published in the National Vulnerability Database on September 15, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-11728 actively exploited?
CVE-2026-11728 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 73.7% of all scored CVEs.
What is the CVSS score of CVE-2026-11728?
CVE-2026-11728 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-11728?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11728, 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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