CVE-2016-8672: Siemens SIMATIC CP 343-1 Firmware

Medium severity, CVSS 5.3. EPSS: 1.9% chance of exploitation in the next 30 days.

A vulnerability has been identified in SIMATIC CP 343-1 Advanced (incl. SIPLUS NET variant) (All versions < V3.0.53), SIMATIC CP 443-1 Advanced (incl. SIPLUS NET variant) (All versions < V3.2.17), SIMATIC S7-300 PN/DP CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 PN/DP CPU family (incl. SIPLUS variants) (All versions). The integrated web server delivers cookies without the "secure" flag. Modern browsers interpreting the flag would mitigate potential data leakage in case of clear text transmission.

Affected products

• Siemens SIMATIC CP 343-1 Firmware: affected versions not specified
• Siemens SIMATIC CP 443-1 Firmware: affected versions not specified
• Siemens SIMATIC s7 300 CPU Firmware: affected versions not specified
• Siemens SIMATIC s7 400 CPU Firmware: affected versions not specified

Published 2016-11-23. Last modified 2026-06-17.