CVE-2026-16225

MEDIUM

davenardella snap7 s7_peer.cpp NegotiatePDULength out-of-bounds write

Title source: cna
STIX 2.1

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.

References (6)

Core 6
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-380047 | davenardella snap7 s7_peer.cpp NegotiatePDULength out-of-bounds write
https://vuldb.com/vuln/380047
Signature, Permissions Required signature permissions-required
VDB-380047 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/vuln/380047/cti
Third Party Advisory third-party-advisory
CVE-2026-16225 | CVE Analysis and Report
https://vuldb.com/cve/CVE-2026-16225
Third Party Advisory third-party-advisory
Submit #858228 | Davide Nardella Snap7 1.4.3 Heap-Based Intra-Object Out-of-Bounds Write
https://vuldb.com/submit/858228
Exploit exploit issue-tracking
https://github.com/davenardella/snap7/issues/17

Scores

CVSS v3 6.3
EPSS 0.0023
EPSS Percentile 13.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-119 CWE-787
Status published
Products (4)
davenardella/snap7 1.4.0
davenardella/snap7 1.4.1
davenardella/snap7 1.4.2
davenardella/snap7 1.4.3
Published Jul 19, 2026
Tracked Since Jul 19, 2026