CVE-2023-39946

highpriority · track · 30EPSS 0.009 · 59 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.89% (59th) EPSS

CVSS 7.5 · high

Is it mine?

10 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.11.1, 2.10.2, 2.9.2, and 2.6.6, heap can be overflowed by providing a PID_PROPERTY_LIST parameter that contains a CDR string with length larger than the size of actual content. In `eprosima::fastdds::dds::ParameterPropertyList_t::push_back_helper`, `memcpy` is called to first copy the octet'ized length and then to copy the data into `properties_.data`. At the second memcpy, both `data` and `size` can be controlled by anyone that sends the CDR string to the discovery multicast port. This can remotely crash any Fast-DDS process. Versions 2.11.1, 2.10.2, 2.9.2, and 2.6.6 contain a patch for this issue.

cvss

Technical severity, 0–10. One row per scoring source.

8.2

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–8.2

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.18.2highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Hsecondary · ENISA EU

v3.18.2highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Hsecondary · security-advisories@github.comexploitability 3.9 · impact 4.2

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: poc · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-122US

affected products (10)

Products and version ranges known to be affected.

eProsima Fast-DDS≤ < 2.6.6enisa_euvdEU
eProsima Fast-DDS≤ = 2.11.0enisa_euvdEU
eProsima Fast-DDS2.10.0, → 2.10.2enisa_euvdEU
eProsima Fast-DDS2.7.0, → 2.9.2enisa_euvdEU
debian debian linux= 11.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
debian debian linux= 12.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
eprosima fast dds2.10.0 → 2.10.2nvdUScpe:2.3:a:eprosima:fast_dds:*:*:*:*:*:*:*:*
eprosima fast dds= 2.11.0nvdUScpe:2.3:a:eprosima:fast_dds:*:*:*:*:*:*:*:*
eprosima fast dds2.6.0 → 2.6.6nvdUScpe:2.3:a:eprosima:fast_dds:*:*:*:*:*:*:*:*
eprosima fast dds2.9.0 → 2.9.2nvdUScpe:2.3:a:eprosima:fast_dds:*:*:*:*:*:*:*:*

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2023-08-11modified 2026-06-17

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+16135 more

references (12)

External citations — patches, advisories, analysis.

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