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CVE-2016-8673

• Severity: high (CVSS 8.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-11-23 · updated 2026-06-17
• Weakness: CWE-352

Description

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 at port 80/TCP or port 443/TCP of the affected devices could allow remote attackers to perform actions with the permissions of an authenticated user, provided the targeted user has an active session and is induced to trigger the malicious request.

Affected products

• Siemens Simatic Cp 343-1 Firmware: all versions
• Siemens Simatic Cp 443-1 Firmware: all versions
• Siemens Simatic S7 300 Cpu Firmware: all versions
• Siemens Simatic S7 400 Cpu Firmware: all versions

References

• https://cert-portal.siemens.com/productcert/pdf/ssa-603476.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-603476.pdf

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