Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
davenardella snap7 ReadVar Request s7_server.cpp PerformFunctionRead out-of-bounds write
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
A L N N N L L L 2.1 .0027 18.5 —
AFFECTED
Product Versions Fixed
snap7 1.4.0 – —
TIMELINE
Jul 8 EXPLOIT PUBLISHED — CVE-2026-15105 (davenardella snap7). Public exploit reference added.
Jul 8 Reserved by VulDB
Jul 8 Published (CNA: VulDB)
Aug 1 RESCORED — CVE-2026-15105 (davenardella snap7). CVSS 5.3 → 2.1 (NVD).
Description
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 out-of-bounds write. 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.
Lifecycle
Complete event history — 4 events, chronological
| Date | Event | Detail |
|---|
| July 8, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-15105 (davenardella snap7). Public exploit reference added. |
| July 8, 2026 | Reserved | Reserved by VulDB |
| July 8, 2026 | Published | Published (CNA: VulDB) |
| August 1, 2026 | RESCORED | RESCORED — CVE-2026-15105 (davenardella snap7). CVSS 5.3 → 2.1 (NVD). |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| davenardella | snap7 | — | 1.4.0 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-15105 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.