MQTT credentials and control traffic are transmitted in cleartext, exposing sensitive information to network-level attackers. This may enable unauthorized device impersonation and disruption of messaging functions.
CVE-2026-69658
CRITICALPre-NVD 9.89.8—Trending — 3 sources updated this week
EchelonGraph scoreHIGH confidence
Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-28. a secondary CVSS source baseline 9.8; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: ghsa, secondary
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 9.8Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.8
- EG Score
- 9.8(high)
- EG Risk
- 49(Track)EG Risk 49/100SSVC: 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 computedSeverity98% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- —
- EPSS %ILE
- —
- KEV
- Not listed
Published
August 27, 2026
Last Modified
August 28, 2026
Advisory Details (2)
Auto-updated Aug 28, 2026Patch available. Sources: cisa.
cisa Patch Available
Ebyte NE2-D11 | CISA
https://www.cisa.gov/news-events/ics-advisories/icsa-26-237-06generic
CSAF/csaf_files/OT/white/2026/icsa-26-237-06.json at develop · cisagov/CSAF · GitHub
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-237-06.jsonVendor Advisories for CVE-2026-69658(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 5× in last 7d / 5× 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.
- 2026-08-28 04:29 UTCEG score recompute
- 2026-08-28 04:29 UTCGHSA enrichment
- 2026-08-28 00:31 UTCEG score recompute
- 2026-08-27 23:23 UTCEG score recompute
- 2026-08-27 23:22 UTCMITRE cvelistV5first tracked
Frequently asked(4)
What is CVE-2026-69658?
CVE-2026-69658 is a critical vulnerability published on August 27, 2026. MQTT credentials and control traffic are transmitted in cleartext, exposing sensitive information to network-level attackers. This may enable unauthorized device impersonation and disruption of messaging functions.
When was CVE-2026-69658 disclosed?
CVE-2026-69658 was first published in the National Vulnerability Database on August 27, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-69658?
CVE-2026-69658 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-69658?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-69658, 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-2026-69658
Is Your Infrastructure Affected by CVE-2026-69658?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.