Vulnerability · Published Feb 3, 2026 · Assigned by GitHub_M
CVE-2025-62601FastDDS has heap buffer overflow in readString via Manipulated DATA Submessage when DDS Security is enabled
Low 1.7
In plain English
A low-severity heap buffer overflow in Fast-DDS from eProsima. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).
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 — specifically by tampering with the `str_size` value read by `readString` (called from `readBinaryProperty`) — are modified, a 32-bit integer overflow can occur, causing `std::vector::resize` to use an attacker-controlled size and quickly trigger heap buffer overflow and remote process term ination. Versions 3.4.1, 3.3.1, and 2.6.11 patch the issue.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | fastdds | no fix listed | DEBIAN-CVE-2025-62601 |
| Debian:13 | fastdds | no fix listed | DEBIAN-CVE-2025-62601 |
| Ubuntu:24.04:LTS | fastdds | no fix listed | UBUNTU-CVE-2025-62601 |
| Ubuntu:25.10 | fastdds | no fix listed | UBUNTU-CVE-2025-62601 |
| Ubuntu:26.04:LTS | fastdds | no fix listed | UBUNTU-CVE-2025-62601 |
| Ubuntu:26.10 | fastdds | no fix listed | UBUNTU-CVE-2025-62601 |
Affected products (as reported)
Weakness: CWE-122 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U
References
- https://security-tracker.debian.org/tracker/CVE-2025-62601
- https://github.com/eProsima/Fast-DDS/commit/354218514d32beac963ff5c306f1cf159ee37c5f
- https://github.com/eProsima/Fast-DDS/commit/ced3b6f92d928af1eae77d5fe889878128ad421a
- https://github.com/eProsima/Fast-DDS/commit/a726e6a5daba660418d1f7c05b6f203c17747d2b