CVE-2026-19206

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory (severity: LOW) published 2026-08-07. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

A security flaw has been discovered in MZ Automation libiec61850 up to 1.6.1. This affects the function SVReceiver_stopThreadless of the file src/sampled_values/sv_subscriber.c of the component ASDU Element Handler. Performing a manipulation results in heap-based buffer overflow. The attack must be initiated from a local position. The exploit has been released to the public and may be used for attacks. Upgrading to version 1.6.2 is able to mitigate this issue. The patch is named a96bd674e0238276dd1387d31d52e55229d0771e. The affected component should be upgraded.

CVSS v3
5.3
EG Score
5.3(high)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

August 7, 2026

Last Modified

August 12, 2026

Advisory Details (4)

Auto-updated Aug 7, 2026
Patch available. Sources: github_commit, github_release.
github_release Patch Available

1.6.2

Patch available: mz-automation/libiec61850 v1.6.2

https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2
generic

`Out-of-Bounds Read` in SV Subscriber `confRev` Handling via Missing Fixed-Length Validation · Issue #598 · mz-automation/libiec61850 · GitHub

https://github.com/mz-automation/libiec61850/issues/598#issuecomment-4858659113
generic

`Out-of-Bounds Read` in SV Subscriber `confRev` Handling via Missing Fixed-Length Validation · Issue #598 · mz-automation/libiec61850 · GitHub

https://github.com/mz-automation/libiec61850/issues/598
github_commit Patch Available

commit a96bd674e023 (mz-automation/libiec61850)

Patch available: mz-automation/libiec61850 v1.6.2 (contains commit a96bd674e023)

https://github.com/mz-automation/libiec61850/commit/a96bd674e0238276dd1387d31d52e55229d0771e

Vendor Advisories for CVE-2026-19206(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 20× in last 7d / 42× 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. 2026-08-21 05:16 UTCEG score recompute
  2. 2026-08-21 05:16 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 04:15 UTCEG score recompute
  5. 2026-08-20 04:15 UTCGHSA enrichment
  6. 2026-08-19 17:03 UTCEPSS rescore
  7. 2026-08-19 03:14 UTCEG score recompute
  8. 2026-08-19 03:14 UTCGHSA enrichment
  9. 2026-08-18 13:48 UTCEPSS rescore
  10. 2026-08-18 02:11 UTCEG score recompute
  11. 2026-08-18 02:11 UTCGHSA enrichment
  12. 2026-08-17 13:47 UTCEPSS rescore
  13. 2026-08-17 01:07 UTCEG score recompute
  14. 2026-08-17 01:07 UTCGHSA enrichment
  15. 2026-08-16 14:56 UTCEPSS rescore
  16. 2026-08-16 02:14 UTCEPSS rescore
  17. 2026-08-16 00:07 UTCEG score recompute
  18. 2026-08-16 00:07 UTCGHSA enrichment
  19. 2026-08-15 01:30 UTCEPSS rescore
  20. 2026-08-14 23:06 UTCGHSA enrichment
  21. 2026-08-13 22:05 UTCEG score recompute
  22. 2026-08-13 22:05 UTCGHSA enrichment
  23. 2026-08-13 22:00 UTCEPSS rescore
  24. 2026-08-12 21:04 UTCGHSA enrichment
  25. 2026-08-12 20:30 UTCEG score recompute
Show 17 more
  1. 2026-08-12 20:30 UTCGHSA enrichment
  2. 2026-08-12 13:50 UTCEPSS rescore
  3. 2026-08-11 19:29 UTCEG score recompute
  4. 2026-08-11 19:29 UTCGHSA enrichment
  5. 2026-08-11 13:42 UTCEPSS rescore
  6. 2026-08-11 00:00 UTCEPSS rescore
  7. 2026-08-10 18:29 UTCGHSA enrichment
  8. 2026-08-09 17:28 UTCEG score recompute
  9. 2026-08-09 17:28 UTCGHSA enrichment
  10. 2026-08-09 13:46 UTCEPSS rescore
  11. 2026-08-08 16:37 UTCEPSS rescore
  12. 2026-08-08 16:28 UTCEG score recompute
  13. 2026-08-08 16:28 UTCGHSA enrichment
  14. 2026-08-07 14:26 UTCEG score recompute
  15. 2026-08-07 14:26 UTCNVD updateCVSS v4 → 1.9
  16. 2026-08-07 14:13 UTCEG score recompute
  17. 2026-08-07 14:12 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19206?
CVE-2026-19206 is a medium vulnerability published on August 7, 2026. A security flaw has been discovered in MZ Automation libiec61850 up to 1.6.1. This affects the function SVReceiverstopThreadless of the file src/sampledvalues/sv_subscriber.c of the component ASDU Element Handler. Performing a manipulation results in heap-based buffer overflow. The attack must be…
When was CVE-2026-19206 disclosed?
CVE-2026-19206 was first published in the National Vulnerability Database on August 7, 2026, with the most recent update on August 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19206 actively exploited?
CVE-2026-19206 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 93.9% of all scored CVEs.
What is the CVSS score of CVE-2026-19206?
CVE-2026-19206 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-19206?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19206, 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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