CVE-2025-62602 FastDDS has heap buffer overflow in readData via Manipulated DATA Submessage when DDS Security is enabled
Attackers can cause remote denial of service in FastDDS by manipulating DATA Submessages when security is enabled, leading to heap buffer overflow and process termination.
- 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-2025-62602?
CVE-2025-62602 is a low-severity vulnerability in Debian Debian Linux, published on 3 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group ). Prior to versions 3.4.1, 3.3.1, and 2.6.11, when the security mode is enabled, modifying the DATA Submessage within an SPDP packet sent by a publisher causes a heap buffer overflow, resulting in remote termination of Fast-DDS. If the fields of `PID_IDENTITY_TOKEN` or `PID_PERMISSIONS_TOKEN` in the DATA Submessage are tampered with — specially `readOctetVector` reads an unchecked `vecsize` that is propagated unchanged into `readData` as the `length` parameter — the attacker-contro lled `vecsize` can trigger a 32-bit integer overflow during the `length` calculation. That overflow can cause large alloca tion attempt that quickly leads to OOM, enabling a remotely-triggerable denial-of-service and remote process termination. Versions 3.4.1, 3.3.1, and 2.6.11 patch the issue.
Which versions are affected by CVE-2025-62602?
It affects 2 products.
Products include Debian Debian Linux, Eprosima Fast Dds.
How do I fix CVE-2025-62602?
No fix has been published for CVE-2025-62602 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-62602 being exploited?
There is no known exploitation of CVE-2025-62602 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2025-62602, UBUNTU-CVE-2025-62602.