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 s7_peer.cpp NegotiatePDULength out-of-bounds write
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
N L N L N L L L 2.1 .0023 13.9 —
AFFECTED
Product Versions Fixed
snap7 1.4.0 – —
TIMELINE
Jul 18 Reserved by VulDB
Jul 19 EXPLOIT PUBLISHED — CVE-2026-16225 (davenardella snap7). Public exploit reference added.
Jul 19 Published (CNA: VulDB)
Jul 20 RESCORED — CVE-2026-16225 (davenardella snap7). CVSS 5.3 → 2.1 (NVD).
Description
A security flaw has been discovered in davenardella snap7 up to 1.4.3. The impacted element is the function TSnap7Peer::NegotiatePDULength of the file src/core/s7_peer.cpp. The manipulation of the argument PDULength results in out-of-bounds write. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.
Lifecycle
Complete event history — 4 events, chronological
| Date | Event | Detail |
|---|
| July 18, 2026 | Reserved | Reserved by VulDB |
| July 19, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-16225 (davenardella snap7). Public exploit reference added. |
| July 19, 2026 | Published | Published (CNA: VulDB) |
| July 20, 2026 | RESCORED | RESCORED — CVE-2026-16225 (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-2026-16225 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.