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S7comm server crash via oversized Read Variable count=0xFFFF (CWE-20)

Status: Open.

#16 In SCADACS/snap7;

· alosafuzz opened on Jul 17, 2026

Pre-auth NULL-pointer dereference in S7 Upload handler — snap7 server

Status: Open.

#15 In SCADACS/snap7;

· entropy1337 opened on Jul 12, 2026

Pre-auth heap buffer overflow in S7 Download handler — snap7 server

Status: Open.

#14 In SCADACS/snap7;

· entropy1337 opened on Jul 12, 2026

Pre-auth stack buffer overflow in S7 Write handler

Status: Open.

#12 In SCADACS/snap7;

· entropy1337 opened on Jul 12, 2026

Pre-auth heap buffer overflow in S7 Download handler — snap7 server

Status: Open.

#11 In SCADACS/snap7;

· entropy1337 opened on Jul 12, 2026

Pre-auth stack overflow in S7 Read handler (signed/unsigned guard bypass)

Status: Open.

#10 In SCADACS/snap7;

· entropy1337 opened on Jul 12, 2026

Wrong filename in snap7-full-1.4.2

Status: Open.

#7 In SCADACS/snap7;

· Kurt-Mueller opened on Nov 21, 2024

The program does not automatically connect to the PLC S7-1200 after the computer restarts.

Status: Open.

#6 In SCADACS/snap7;

· hexiangdong2020 opened on Mar 17, 2023

Update

Status: Open.

#4 In SCADACS/snap7;

· cubimon opened on Feb 26, 2019