CVE-2023-39534

Malformed GAP submessage triggers assertion failure

HIGH
7.5
CVSS Score
Published: August 11, 2023 at 01:12 PM UTC
Updated: June 17, 2026 at 06:12 AM UTC
2 products affected across 2 vendorsDebian LinuxFast DDS

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Severity
HIGH7.5
Exploit prediction
EPSS 1%
SSVC
PoC

Description

eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.10.0, 2.9.2, and 2.6.5, a malformed GAP submessage can trigger assertion failure, crashing FastDDS. Version 2.10.0, 2.9.2, and 2.6.5 contain a patch for this issue.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.6.5v < 2.9.22.6.0 ≤ v < 2.6.52.9.0 ≤ v < 2.9.22.10.0 rc1
Affected range stops below 2.6.5, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.9.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-617

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