CVE catalog

CVE-2025-62603

fastdds: CVE-2025-62603

Severity: Medium
Published: Feb 3, 2026, 8:15:56 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.56% · Oct 25, 2026

Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group ). ParticipantGenericMessage is the DDS Security control-message container that carries not only the handshake but also on going security-control traffic after the handshake, such as crypto-token exchange, rekeying, re-authentication, and token delivery for newly appearing endpoints. On receive, the CDR parser is invoked first and deserializes the `message_data` (i .e., the `DataHolderSeq`) via the `readParticipantGenericMessage → readDataHolderSeq` path. The `DataHolderSeq` is parsed sequentially: a sequence count (`uint32`), and for each DataHolder the `class_id` string (e.g. `DDS:Auth:PKI-DH:1.0+Req`), string properties (a sequence of key/value pairs), and binary properties (a name plus an octet-vector). The parser operat es at a stateless level and does not know higher-layer state (for example, whether the handshake has already completed), s o it fully unfolds the structure before distinguishing legitimate from malformed traffic. Because RTPS permits duplicates, delays, and retransmissions, a receiver must perform at least minimal structural parsing to check identity and sequence n umbers before discarding or processing a message; the current implementation, however, does not "peek" only at a minimal header and instead parses the entire `DataHolderSeq`. As a result, prior to versions 3.4.1, 3.3.1, and 2.6.11, this parsi ng behavior can trigger an out-of-memory condition and remotely terminate the process. Versions 3.4.1, 3.3.1, and 2.6.11 p atch the issue.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	fastdds	sid	`3.3.0+ds-3`	vulnerable
Debian	fastdds	trixie	`3.1.2+ds-1`	vulnerable
Debian	fastdds	bookworm	`2.9.1+ds-1+deb12u2`	vulnerable
Debian	fastdds	bookworm-security	`2.9.1+ds-1+deb12u2`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	fastdds	source	sid	`(unfixed)`	not yet assigned	Not reported	[1121094]
Debian	fastdds	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1121094]
Debian	fastdds	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1121094]

[Debian bug #1121094]

Notes

[trixie] fastdds: Minor issue [bookworm] fastdds: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[fastdds-tools]Affected
Source package: [fastdds]
Details (4)
- 2.9.1+ds-1+deb12u2 · amd64 · bookworm
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · arm64 · bookworm
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · amd64 · bookworm-security
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · arm64 · bookworm-security
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
[libfastrtps2.9]Affected
Source package: [fastdds]
Details (4)
- 2.9.1+ds-1+deb12u2 · amd64 · bookworm
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · arm64 · bookworm
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · amd64 · bookworm-security
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · arm64 · bookworm-security
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
[libfastrtps-dev]Affected
Source package: [fastdds]
Details (4)
- 2.9.1+ds-1+deb12u2 · amd64 · bookworm
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · arm64 · bookworm
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · amd64 · bookworm-security
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · arm64 · bookworm-security
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
[libfastrtps-doc]Affected
Source package: [fastdds]
Details (4)
- 2.9.1+ds-1+deb12u2 · all · bookworm
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · all · bookworm
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · all · bookworm-security
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · all · bookworm-security
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12

[Debian 13 (Trixie)]

[fastdds-tools]Affected
Source package: [fastdds]
Details (2)
- 3.1.2+ds-1+b1 · amd64 · trixie
  Affected
  dsa · fastdds · debian · 13
- 3.1.2+ds-1+b1 · arm64 · trixie
  Affected
  dsa · fastdds · debian · 13
[libfastdds3.1]Affected
Source package: [fastdds]
Details (2)
- 3.1.2+ds-1+b1 · amd64 · trixie
  Affected
  dsa · fastdds · debian · 13
- 3.1.2+ds-1+b1 · arm64 · trixie
  Affected
  dsa · fastdds · debian · 13
[libfastdds-dev]Affected
Source package: [fastdds]
Details (2)
- 3.1.2+ds-1+b1 · amd64 · trixie
  Affected
  dsa · fastdds · debian · 13
- 3.1.2+ds-1+b1 · arm64 · trixie
  Affected
  dsa · fastdds · debian · 13
[libfastdds-doc]Affected
Source package: [fastdds]
Details (2)
- 3.1.2+ds-1 · all · trixie
  Affected
  dsa · fastdds · debian · 13
- 3.1.2+ds-1 · all · trixie
  Affected
  dsa · fastdds · debian · 13
[libfastrtps-dev]Affected
Source package: [fastdds]
Details (2)
- 3.1.2+ds-1 · all · trixie
  Affected
  dsa · fastdds · debian · 13
- 3.1.2+ds-1 · all · trixie
  Affected
  dsa · fastdds · debian · 13

Observed: Oct 24, 2026, 1:06:17 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]