OSV-2026-1052 UNKNOWN READ in eprosima::fastdds::dds::QosPoliciesSerializer<eprosima::fastdds::dds::PartitionQ
An unknown read vulnerability in the Fast DDS library can cause a crash when processing malformed CDR messages, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2026-1052?
OSV-2026-1052 is a memory corruption vulnerability in fast-dds, published on 11 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=532839120
Crash type: UNKNOWN READ
Crash state:
eprosima::fastdds::dds::QosPoliciesSerializer<eprosima::fastdds::dds::PartitionQ
eprosima::fastdds::rtps::ReaderProxyData::read_from_cdr_message
fuzz_proxy_cdr.cxx
Which versions are affected by OSV-2026-1052?
1 open source package ship an affected version, including fast-dds.
| Package | Affected | Fixed in |
|---|---|---|
fast-dds OSS-Fuzz | All versions | None |
How do I fix OSV-2026-1052?
No fix has been published for OSV-2026-1052 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is OSV-2026-1052 being exploited?
There is no known exploitation of OSV-2026-1052 in the wild and no public exploit code.