CVE-2026-16225

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

MEDIUM
6.3
CVSS Score
Published: July 19, 2026 at 08:00 AM UTC
Updated: October 24, 2026 at 08:10 PM UTC
1 product affected across 1 vendorSNAP7

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Severity
MEDIUM6.3
Exploit prediction
EPSS 0.4%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (6)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/380047
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/380047/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-16225
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/858228
ExploitIssue Tracking
Source: cverecord
https://github.com/davenardella/snap7/issues/17

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-787CWE-119

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