PT-2026-61062 · Davenardella · Snap7

Chuan Wei + 1 · CVE-2026-16225 · Published 2026-07-19 · Updated 2026-07-19

Positive Technologies (AI Summary)

CVSS v2.0

6.5

Medium

Base vector

AV:N/AC:L/Au:S/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions davenardella snap7 versions prior to 1.4.4

Description A security flaw allows for a remote out-of-bounds write, which occurs when the PDULength argument is manipulated within the TSnap7Peer::NegotiatePDULength() function located in the src/core/s7 peer.cpp file.

Recommendations Update davenardella snap7 to version 1.4.4 or later. As a temporary mitigation, restrict access to the TSnap7Peer::NegotiatePDULength() function to prevent remote manipulation of the PDULength argument.

Exploit

Fix

Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-119

CWE-787

Related Identifiers

CVE-2026-16225

Affected Products

Snap7

References · 8

• 🔥 https://github.com/davenardella/snap7/issues/17 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-16225 · Security Note
• https://github.com/davenardella/snap7 · Note
• https://vuldb.com/cve/CVE-2026-16225 · Note
• https://vuldb.com/submit/858228 · Note
• https://vuldb.com/vuln/380047/cti · Note
• https://vuldb.com/vuln/380047 · Note
• https://twitter.com/VulmonFeeds/status/2078784455632630214 · Twitter Post