Medium 6.3Published Jul 19, 2026

CVE-2026-16225davenardella snap7 s7_peer.cpp NegotiatePDULength out-of-bounds write

Updated under an hour ago (Oct 27, 2026, 11:40 AM ET)

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Every CVE for davenardella snap7

Exploited in the last 30 days

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.

CVSS: 6.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
Weakness (CWE): CWE-787, CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Jul 20, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

davenardella snap7 davenardella:snap7	1.4.0; 1.4.1; 1.4.2; 1.4.3	CNA record

References

References

https://vuldb.com/vuln/380047	vdb-entry, technical-description
https://vuldb.com/vuln/380047/cti	signature, permissions-required
https://vuldb.com/cve/CVE-2026-16225	third-party-advisory
https://vuldb.com/submit/858228	third-party-advisory
https://github.com/davenardella/snap7/issues/17	exploit, issue-tracking
https://github.com/davenardella/snap7/	product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.