CVE-2025-29931 Denial of service in TeleControl Server Basic
Unauthenticated remote attackers can cause a partial denial of service in redundant setups by exploiting improper length validation in serialized messages.
- 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-2025-29931?
CVE-2025-29931 is a medium-severity denial of service vulnerability in Siemens Telecontrol Server Basic, published on 17 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 product does not properly validate a length field in a serialized message which it uses to determine the amount of memory to be allocated for deserialization. This could allow an unauthenticated remote attacker to cause the application to allocate exhaustive amounts of memory and subsequently create a partial denial of service condition. Successful exploitation is only possible in redundant Telecontrol Server Basic setups and only if the connection between the redundant servers has been disrupted.
Weakness: CWE-130
Which versions are affected by CVE-2025-29931?
It affects 1 product.
Products include Siemens Telecontrol Server Basic.
How do I fix CVE-2025-29931?
No fix has been published for CVE-2025-29931 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-29931 being exploited?
There is no known exploitation of CVE-2025-29931 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-2025-27539 SQL injection in TeleControl Server Basic
- CVE-2025-27540 SQL injection in TeleControl Server Basic
Sources
Also known as GHSA-5659-7353-7w5p.