CVE-2026-13476

HIGHPre-NVD 7.37.3—
EchelonGraph scoreHIGH confidence

Score 7.3 from GitHub Security Advisory (severity: HIGH) published 2026-08-12. a secondary CVSS source baseline 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.3Exploit: None knownExposed: 0

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

IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary commands with service account privileges on the system due to improper validation of user supplied input.

CVSS v3
7.3
EG Score
7.3(high)
EG Risk
48(Track)
EG Risk 48/100SSVC: 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
Severity73% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
44%
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 Informix Wire Listener Vulnerable to Unauthenticated Remote Code Execution (CVE-2026-13476)

https://www.ibm.com/support/pages/node/7282827

Vendor Advisories for CVE-2026-13476(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 30× in last 7d / 38× 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 23:06 UTCEG score recompute
  2. 2026-08-20 23:06 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 10:01 UTCGHSA enrichment
  5. 2026-08-19 20:57 UTCEG score recompute
  6. 2026-08-19 20:57 UTCGHSA enrichment
  7. 2026-08-19 17:03 UTCEPSS rescore
  8. 2026-08-19 07:49 UTCGHSA enrichment
  9. 2026-08-18 18:43 UTCEG score recompute
  10. 2026-08-18 18:43 UTCGHSA enrichment
  11. 2026-08-18 13:48 UTCEPSS rescore
  12. 2026-08-18 05:49 UTCGHSA enrichment
  13. 2026-08-17 16:44 UTCEG score recompute
  14. 2026-08-17 16:44 UTCGHSA enrichment
  15. 2026-08-17 03:39 UTCEG score recompute
  16. 2026-08-17 03:39 UTCGHSA enrichment
  17. 2026-08-16 14:56 UTCEPSS rescore
  18. 2026-08-16 14:34 UTCEG score recompute
  19. 2026-08-16 14:34 UTCGHSA enrichment
  20. 2026-08-16 02:14 UTCEPSS rescore
  21. 2026-08-16 01:29 UTCGHSA enrichment
  22. 2026-08-15 12:24 UTCEG score recompute
  23. 2026-08-15 12:24 UTCGHSA enrichment
  24. 2026-08-15 01:30 UTCEPSS rescore
  25. 2026-08-14 23:19 UTCEG score recompute
Show 13 more
  1. 2026-08-14 23:19 UTCGHSA enrichment
  2. 2026-08-14 22:24 UTCEG score recompute
  3. 2026-08-14 22:24 UTCGHSA enrichment
  4. 2026-08-14 10:06 UTCEG score recompute
  5. 2026-08-14 10:06 UTCGHSA enrichment
  6. 2026-08-13 22:00 UTCEPSS rescore
  7. 2026-08-13 21:01 UTCGHSA enrichment
  8. 2026-08-13 11:25 UTCGHSA enrichment
  9. 2026-08-12 22:21 UTCEG score recompute
  10. 2026-08-12 22:21 UTCGHSA enrichment
  11. 2026-08-12 21:20 UTCEG score recompute
  12. 2026-08-12 21:01 UTCEG score recompute
  13. 2026-08-12 21:00 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-13476?
CVE-2026-13476 is a high vulnerability published on August 12, 2026. IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary commands with service account privileges on the system due to improper validation of user supplied input.
When was CVE-2026-13476 disclosed?
CVE-2026-13476 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-2026-13476 actively exploited?
CVE-2026-13476 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 56.3% of all scored CVEs.
What is the CVSS score of CVE-2026-13476?
CVE-2026-13476 has a CVSS v3 base score of 7.3 (NVD).
How do I remediate CVE-2026-13476?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-13476, 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-2026-13476

Explore →

Is Your Infrastructure Affected by CVE-2026-13476?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs