Every CVE Search/ Get API key

CVE-2023-39949

Improper validation of sequence numbers leading to remotely reachable assertion failure

7.5 HighFix available

eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.9.1 and 2.6.5, improper validation of sequence numbers may lead to remotely reachable assertion failure. This can remotely crash any Fast-DDS process. Versions 2.9.1 and 2.6.5 contain a patch for this issue.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

1.04%Up 1.0 points since Aug 12, 2023
90%50%10%1%

What each source reports

CVE List Score used 7.5

Improper validation of sequence numbers leading to remotely reachable assertion failure

eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.9.1 and 2.6.5, improper validation of sequence numbers may lead to remotely reachable assertion failure. This can remotely crash any Fast-DDS process. Versions 2.9.1 and 2.6.5 contain a patch for this issue.

Record
CVE-2023-39949
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-617
Updated
2026-11-02
EUVDEUVD-2023-43647 7.5

eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.9.1 and 2.6.5, improper validation of sequence numbers may lead to remotely reachable assertion failure. This can remotely crash any Fast-DDS process. Versions 2.9.1 and 2.6.5 contain a patch for this issue.

Record
EUVD-2023-43647
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-03
NVD 7.5

eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.9.1 and 2.6.5, improper validation of sequence numbers may lead to remotely reachable assertion failure. This can remotely crash any Fast-DDS process. Versions 2.9.1 and 2.6.5 contain a patch for this issue.

Record
CVE-2023-39949
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-617
Updated
2026-11-02
OSV 7.5

Improper validation of sequence numbers leading to remotely reachable assertion failure

eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.9.1 and 2.6.5, improper validation of sequence numbers may lead to remotely reachable assertion failure. This can remotely crash any Fast-DDS process. Versions 2.9.1 and 2.6.5 contain a patch for this issue.

Record
CVE-2023-39949
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-617
Updated
2026-11-02
OSVDEBIAN-CVE-2023-39949 7.5

eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.9.1 and 2.6.5, improper validation of sequence numbers may lead to remotely reachable assertion failure. This can remotely crash any Fast-DDS process. Versions 2.9.1 and 2.6.5 contain a patch for this issue.

Record
DEBIAN-CVE-2023-39949
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2023-39949 7.5

eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.9.1 and 2.6.5, improper validation of sequence numbers may lead to remotely reachable assertion failure. This can remotely crash any Fast-DDS process. Versions 2.9.1 and 2.6.5 contain a patch for this issue.

Record
UBUNTU-CVE-2023-39949
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUSN-6306-1 No score

fastdds vulnerabilities

It was discovered that Fast DDS incorrectly handled certain inputs. A remote attacker could possibly use this issue to cause a denial of service and information exposure. This issue only affected Ubuntu 22.04 LTS. (CVE-2021-38425)

It was discovered that Fast DDS incorrectly handled certain inputs. An attacker could possibly use this issue to cause a crash. (CVE-2023-39534, CVE-2023-39945, CVE-2023-39946, CVE-2023-39947, CVE-2023-39948, CVE-2023-39949)

Record
USN-6306-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
fastdds
Debian:12
 before 2.9.1+ds-1+deb12u1, plus listed versions
2.9.1+ds-1
2.9.1+ds-1+deb12u1
fastdds
Debian:13
 before 2.10.1+ds-2
2.10.1+ds-2
fastdds
Debian:11
From an advisory covering 6 CVEs
 before 2.1.0+ds-9+deb11u1, plus listed versions
2.1.0+ds-9
2.1.0+ds-9+deb11u1
fastdds
Debian:12
From an advisory covering 6 CVEs
 before 2.9.1+ds-1+deb12u1, plus listed versions
2.9.1+ds-1
2.9.1+ds-1+deb12u1
fastdds
Ubuntu:Pro:22.04:LTS
 before 2.5.0+ds-3ubuntu0.1~esm1, plus listed versions
2.1.0+ds-92.4.1+ds-12.5.0+ds-3
2.5.0+ds-3ubuntu0.1~esm1
fastdds
Ubuntu:Pro:22.04:LTS
From an advisory covering 7 CVEs
 before 2.5.0+ds-3ubuntu0.1~esm1, plus listed versions
2.1.0+ds-92.4.1+ds-12.5.0+ds-3
2.5.0+ds-3ubuntu0.1~esm1

History

History
RecordedChangedSources
affected, facts
aliases, publishedEUVD
first indexedCVE List, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-39949 is a high vulnerability (CVSS 7.5) in Eprosima Fast-dds, published August 11, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.04%, the 64th percentile. Fixed in fastdds 2.9.1+ds-1+deb12u1.

References

Show 10 moreShow less
Pages All vulnerabilities Browse Docs Sources Guide Get API key
MoveEnter Open