CVE-2025-27539 SQL injection in TeleControl Server Basic
Unauthenticated remote attackers can exploit SQL injection to bypass authorization, read/write database data, and execute code with NetworkService permissions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-27539?
CVE-2025-27539 is a critical SQL injection vulnerability in Siemens Telecontrol Server Basic, published on 16 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability has been identified in TeleControl Server Basic (All versions < V3.1.2.2). The affected application is vulnerable to SQL injection through the internally used 'VerifyUser' method. This could allow an unauthenticated remote attacker to bypass authorization controls, to read from and write to the application's database and execute code with "NT AUTHORITY\NetworkService" permissions. A successful attack requires the attacker to be able to access port 8000 on a system where a vulnerable version of the affected application is executed on. (ZDI-CAN-25914)
Weakness: CWE-89
Which versions are affected by CVE-2025-27539?
It affects 1 product.
Products include Siemens Telecontrol Server Basic.
How do I fix CVE-2025-27539?
No fix has been published for CVE-2025-27539 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2025-27539 being exploited?
There is no known exploitation of CVE-2025-27539 in the wild and no public exploit code.
Other vulnerabilities in Siemens Telecontrol Server Basic
- CVE-2024-44102 Deserialization in PP TeleControl Server Basic 1000 to 5000 V3.1
- CVE-2025-40765 Information disclosure in TeleControl Server Basic V3.1
- CVE-2025-27495 SQL injection in TeleControl Server Basic
- CVE-2025-27540 SQL injection in TeleControl Server Basic
- CVE-2018-4836 Privilege escalation in TeleControl Server Basic
Sources
Also known as GHSA-hrx7-7gcr-7fmm.