CVE-2016-8562 Siemens SIMATIC CP: privilege escalation
In plain words: Something running with limited rights can promote itself to full control. Turns a small foothold (like a malicious app) into administrator or system-level access.
Confirmed exploited by CISA on · US federal patch deadline Mar 24, 2022
What to do
- Install Siemens's security update for SIMATIC CP. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Keep a list of every internet-facing server you run so nothing is forgotten.
- Patch anything in this catalog first, ahead of normal patch cycles.
- Put admin and file-transfer apps behind a VPN or single sign-on instead of the open internet.
Who is affected
Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.
What's at risk: Mass data theft and ransomware: a single flaw in a file-transfer or email server has exposed thousands of organisations at once.
The details
- Official name
- Siemens SIMATIC CP 1543-1 Improper Privilege Management Vulnerability
- Product
- Siemens SIMATIC CP
- CISA description
- An improper privilege management vulnerability exists within the Siemens SIMATIC Communication Processor (CP) that allows a privileged attacker to remotely cause a denial of service.
- Type of flaw
- Privilege escalation (CWE-20)
- Confirmed exploited
- Mar 3, 2022
- US federal patch deadline
- Mar 24, 2022
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Answering about CVE-2016-8562 ·
Questions about CVE-2016-8562
Is CVE-2016-8562 being exploited?
Yes. CISA added CVE-2016-8562 to its Known Exploited Vulnerabilities catalog on Mar 3, 2022, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2016-8562?
Install Siemens's security update for SIMATIC CP. If no update exists, follow the vendor's workaround or stop using the product until one ships. Keep a list of every internet-facing server you run so nothing is forgotten.
Am I affected by CVE-2016-8562?
Only if you use Siemens SIMATIC CP. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.