CVE-2025-62603

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.6% (46th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3

Also known asEUVD-2025-206665 (ENISA EUVD)Source: ENISA EUVD

7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.6% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.6%
EPSS %ILE
46th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.6% within 30 daysSource: FIRST EPSS. FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

February 3, 2026

Last Modified

June 17, 2026

Advisory Details (4)

Auto-updated Aug 6, 2026
Patch available. Sources: github_commit.
GitHub commit Patch Available

commit ced3b6f92d92 (eProsima/Fast-DDS)

Patch available: eProsima/Fast-DDS v2.6.11 (contains commit ced3b6f92d92)

https://github.com/eProsima/Fast-DDS/commit/ced3b6f92d928af1eae77d5fe889878128ad421a
GitHub commit Patch Available

commit a726e6a5daba (eProsima/Fast-DDS)

Patch available: eProsima/Fast-DDS v3.3.1 (contains commit a726e6a5daba)

https://github.com/eProsima/Fast-DDS/commit/a726e6a5daba660418d1f7c05b6f203c17747d2b
GitHub commit Patch Available

commit 354218514d32 (eProsima/Fast-DDS)

Patch available: eProsima/Fast-DDS v3.4.1 (contains commit 354218514d32)

https://github.com/eProsima/Fast-DDS/commit/354218514d32beac963ff5c306f1cf159ee37c5f

Affected Packages

(3 across 3 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
fastdds2.1.0+ds-9 ... 3.6.1+ds-1 (61 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
fastdds2.10.1+ds-1 ... 3.6.1+ds-1 (32 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
fastdds3.1.2+ds-1, 3.3.0+ds-1, 3.3.0+ds-2, 3.3.0+ds-3, 3.6.1+ds-1
  • every version on: no fix on record
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 39× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 95 of 202 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 5 repeat rows among the latest 100 are merged into the row they repeat. The 107 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:43 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  2. 2026-11-01 16:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  3. 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  4. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  5. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  6. 2026-10-28 16:30 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  7. 2026-10-27 16:30 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  8. 2026-10-27 11:52 UTCEG score recompute
  9. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  10. 2026-10-25 16:31 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  11. 2026-10-25 16:13 UTCEG score recompute
  12. 2026-10-24 16:31 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  13. 2026-10-23 16:30 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  14. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  15. 2026-10-21 16:31 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  16. 2026-10-20 16:31 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  17. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  18. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  19. 2026-10-18 05:21 UTCEG score recompute
  20. 2026-10-18 02:17 UTCEG score recompute
  21. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  22. 2026-10-16 16:39 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  23. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  24. 2026-10-14 16:31 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  25. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
Show 70 more
  1. 2026-10-12 16:51 UTCEG score recompute
  2. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  3. 2026-10-11 20:25 UTCEG score recompute
  4. 2026-10-11 18:37 UTCEG score recompute
  5. 2026-10-11 15:12 UTCEG score recompute
  6. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  7. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  8. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  9. 2026-10-09 10:58 UTCOSV refresh
  10. 2026-10-08 17:10 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  11. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  12. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  13. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  14. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  15. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  16. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  17. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  18. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  19. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  20. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  21. 2026-09-24 14:02 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  22. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  23. 2026-09-19 18:30 UTCOSV refresh
  24. 2026-09-19 15:42 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  25. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  26. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  27. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  28. 2026-09-15 03:10 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  29. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  30. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  31. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  32. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  33. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  34. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  35. 2026-09-07 16:00 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  36. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  37. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  38. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  39. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  40. 2026-08-31 21:34 UTCOSV refresh
  41. 2026-08-30 19:16 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  42. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  43. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  44. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  45. 2026-08-26 14:45 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  46. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  47. 2026-08-24 14:16 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  48. 2026-08-23 00:18 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  49. 2026-08-21 23:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  50. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  51. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  52. 2026-08-18 13:47 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  53. 2026-08-17 13:46 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  54. 2026-08-16 14:55 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  55. 2026-08-16 02:13 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  56. 2026-08-15 01:29 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  57. 2026-08-14 11:25 UTCEG score recompute
  58. 2026-08-13 21:59 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  59. 2026-08-13 03:39 UTCEG score recompute
  60. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  61. 2026-08-11 13:42 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  62. 2026-08-10 23:59 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  63. 2026-08-09 16:00 UTCEG score recompute
  64. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  65. 2026-08-08 16:36 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  66. 2026-08-07 22:51 UTCEG score recompute
  67. 2026-08-07 16:26 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  68. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  69. 2026-08-06 04:27 UTCEG score recompute
  70. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.5% · 40th percentile

Frequently asked(5)

What is CVE-2025-62603?
CVE-2025-62603 is a high-severity vulnerability; its CVE record was published on February 3, 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…
When was the CVE record for CVE-2025-62603 published?
The CVE record for CVE-2025-62603 was published on February 3, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of June 17, 2026; the record at its source may have been updated since.
Is CVE-2025-62603 actively exploited?
CVE-2025-62603 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (46th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-62603?
CVE-2025-62603 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2025-62603?
A fix for CVE-2025-62603 is available: update to the fixed version the vendor names in its advisory.

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