CVE-2026-15105

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreHIGH confidence

Score 6.3 from GitHub Security Advisory (severity: LOW) published 2026-07-09. a secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this weekElevated
6.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.3Exploit: NoneExposed: 0

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

A flaw has been found in davenardella snap7 up to 1.4.3. This affects the function TS7Worker::PerformFunctionRead of the file src/core/s7_server.cpp of the component ReadVar Request Handler. This manipulation causes deserialization. The attack requires access to the local network. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

CVSS v3
6.3
EG Score
6.3(high)
EPSS
20.5%
KEV
Not listed

Published

July 8, 2026

Last Modified

July 9, 2026

Advisory Details (2)

Auto-updated Jul 8, 2026
No patch confirmed yet.
generic

GitHub - davenardella/snap7: Snap7 Official repository · GitHub

https://github.com/davenardella/snap7/
generic

Stack Buffer Overflow in `TS7Worker::PerformFunctionRead()` via Multi-Item `ReadVar` Response Assembly · Issue #16 · davenardella/snap7 · GitHub

https://github.com/davenardella/snap7/issues/16

Vendor Advisories for CVE-2026-15105(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 21× in last 7d / 24× 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. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 10:15 UTCEG score recompute
  3. 2026-07-15 10:15 UTCGHSA enrichment
  4. 2026-07-15 02:00 UTCEPSS rescore
  5. 2026-07-14 08:19 UTCEG score recompute
  6. 2026-07-14 08:19 UTCGHSA enrichment
  7. 2026-07-13 22:30 UTCEPSS rescore
  8. 2026-07-13 06:21 UTCEG score recompute
  9. 2026-07-13 06:21 UTCGHSA enrichment
  10. 2026-07-13 06:12 UTCEPSS rescore
  11. 2026-07-12 05:46 UTCEPSS rescore
  12. 2026-07-12 04:21 UTCEG score recompute
  13. 2026-07-12 04:21 UTCGHSA enrichment
  14. 2026-07-11 08:27 UTCEPSS rescore
  15. 2026-07-11 02:24 UTCEG score recompute
  16. 2026-07-11 02:24 UTCGHSA enrichment
  17. 2026-07-10 00:27 UTCEG score recompute
  18. 2026-07-10 00:27 UTCGHSA enrichment
  19. 2026-07-09 19:10 UTCEPSS rescore
  20. 2026-07-09 15:00 UTCNVD updateCVSS v4 → 2.1
  21. 2026-07-09 04:14 UTCMITRE cvelistV5CVSS v4 → 5.3
  22. 2026-07-09 00:54 UTCNVD updateCVSS v4 → 2.1
  23. 2026-07-08 22:29 UTCEG score recompute
  24. 2026-07-08 22:29 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-15105?
CVE-2026-15105 is a medium vulnerability published on July 8, 2026. A flaw has been found in davenardella snap7 up to 1.4.3. This affects the function TS7Worker::PerformFunctionRead of the file src/core/s7_server.cpp of the component ReadVar Request Handler. This manipulation causes deserialization. The attack requires access to the local network. The exploit has…
When was CVE-2026-15105 disclosed?
CVE-2026-15105 was first published in the National Vulnerability Database on July 8, 2026, with the most recent update on July 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15105 actively exploited?
CVE-2026-15105 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 20.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-15105?
CVE-2026-15105 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-15105?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15105, 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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