CVE-2023-50257

CRITICALNVD 9.69.6
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.6 under NVD CVSS v3. EPSS exploit probability: 0.5% (41st 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
Elevated

Also known asEUVD-2023-55071 (ENISA EUVD)Source: ENISA EUVD

9.6EG
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).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 9.6Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

eProsima Fast DDS (formerly Fast RTPS) is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Even with the application of SROS2, due to the issue where the data (p[UD]) and guid values used to disconnect between nodes are not encrypted, a vulnerability has been discovered where a malicious attacker can forcibly disconnect a Subscriber and can deny a Subscriber attempting to connect. Afterwards, if the attacker sends the packet for disconnecting, which is data (p[UD]), to the Global Data Space (239.255.0.1:7400) using the said Publisher ID, all the Subscribers (Listeners) connected to the Publisher (Talker) will not receive any data and their connection will be disconnected. Moreover, if this disconnection packet is sent continuously, the Subscribers (Listeners) trying to connect will not be able to do so. Since the initial commit of the SecurityManager.cpp code (init, on_process_handshake) on Nov 8, 2016, the Disconnect Vulnerability in RTPS Packets Used by SROS2 has been present prior to versions 2.13.0, 2.12.2, 2.11.3, 2.10.3, and 2.6.7.

CVSS v3
9.6
EG Score
9.6CRITICALmedium confidence
EG Risk
59
EG Risk 59/100

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)
Severity96% × 45%
Impact severity (EG Severity): CVSS 9.6 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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
0.5%
EPSS %ILE
41st
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 (9.6): severity, escalated by confirmed exploitation. This CVE's 9.6 is its impact severity (EG Severity), not escalated.

EG Severity
9.6 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-01). 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, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade 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, Track* at medium and Attend at high mission impact.

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

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (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 19, 2024

Last Modified

January 2, 2026

Advisory Details (5)

Auto-updated Oct 2, 2026
Patch available. Sources: github_commit, github.
GitHub advisoryMentions a patch (unverified)

Disconnect Vulnerability in RTPS Packets Used by SROS2 · Advisory · eProsima/Fast-DDS · GitHub

https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-v5r6-8mvh-cp98
GitHub commit Patch Available

commit f2e5ceae8fbe (eProsima/Fast-DDS)

Patch available: eProsima/Fast-DDS v3.1.0 (contains commit f2e5ceae8fbe)

https://github.com/eProsima/Fast-DDS/commit/f2e5ceae8fbea0a6c9445a366faaca0b98a8ef86
GitHub commit Patch Available

commit f07a0213e655 (eProsima/Fast-DDS)

Patch available: eProsima/Fast-DDS v2.10.6 (contains commit f07a0213e655)

https://github.com/eProsima/Fast-DDS/commit/f07a0213e655202188840b864be4438ae1067a13
GitHub commit Patch Available

commit e1869863c06d (eProsima/Fast-DDS)

Patch available: eProsima/Fast-DDS v3.1.0 (contains commit e1869863c06d)

https://github.com/eProsima/Fast-DDS/commit/e1869863c06db7fbb366ae53760fbe6e754be026
GitHub commit Patch Available

commit 072cbc9d6a71 (eProsima/Fast-DDS)

Patch available: eProsima/Fast-DDS v3.1.0 (contains commit 072cbc9d6a71)

https://github.com/eProsima/Fast-DDS/commit/072cbc9d6a71d869a5cbed1873c0cdd6cf67cda4

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
fastdds—
  • every version up to 2.14.0+ds-2: fixed in 2.14.0+ds-2
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 52× 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 96 of 235 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. 4 repeat rows among the latest 100 are merged into the row they repeat. The 139 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:40 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  2. 2026-11-02 14:29 UTCEG score recompute
  3. 2026-11-01 16:31 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  4. 2026-11-01 12:31 UTCEG score recompute
  5. 2026-10-31 16:30 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  6. 2026-10-31 10:32 UTCEG score recompute
  7. 2026-10-30 16:31 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  8. 2026-10-30 08:33 UTCEG score recompute
  9. 2026-10-29 16:30 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  10. 2026-10-29 06:35 UTCEG score recompute
  11. 2026-10-28 16:29 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  12. 2026-10-28 04:36 UTCEG score recompute
  13. 2026-10-27 16:29 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  14. 2026-10-27 02:36 UTCEG score recompute
  15. 2026-10-26 16:29 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  16. 2026-10-25 17:30 UTCEG score recompute
  17. 2026-10-25 16:30 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  18. 2026-10-24 18:33 UTCEG score recompute
  19. 2026-10-24 16:29 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  20. 2026-10-23 16:35 UTCEG score recompute
  21. 2026-10-23 16:29 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  22. 2026-10-22 16:31 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  23. 2026-10-22 14:36 UTCEG score recompute
  24. 2026-10-21 16:29 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  25. 2026-10-21 12:38 UTCEG score recompute
Show 71 more
  1. 2026-10-20 16:30 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  2. 2026-10-20 10:40 UTCEG score recompute
  3. 2026-10-19 16:29 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  4. 2026-10-19 08:37 UTCEG score recompute
  5. 2026-10-18 16:29 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  6. 2026-10-18 06:38 UTCEG score recompute
  7. 2026-10-17 16:30 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  8. 2026-10-17 04:38 UTCEG score recompute
  9. 2026-10-16 16:36 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  10. 2026-10-16 02:40 UTCEG score recompute
  11. 2026-10-15 16:29 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  12. 2026-10-14 22:40 UTCEG score recompute
  13. 2026-10-14 16:30 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  14. 2026-10-13 18:15 UTCEG score recompute
  15. 2026-10-13 16:30 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  16. 2026-10-12 16:31 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  17. 2026-10-12 16:16 UTCEG score recompute
  18. 2026-10-12 00:24 UTCOSV refresh
  19. 2026-10-11 21:40 UTCEG score recompute
  20. 2026-10-11 13:45 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  21. 2026-10-10 19:57 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  22. 2026-10-09 20:05 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  23. 2026-10-08 17:06 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  24. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  25. 2026-10-06 15:15 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  26. 2026-10-05 17:41 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  27. 2026-10-04 23:20 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  28. 2026-10-03 14:23 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  29. 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  30. 2026-09-30 16:35 UTCEG score recompute
  31. 2026-09-30 15:01 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  32. 2026-09-29 15:17 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  33. 2026-09-28 13:49 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  34. 2026-09-27 13:42 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  35. 2026-09-26 00:22 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  36. 2026-09-24 14:01 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  37. 2026-09-23 13:46 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  38. 2026-09-22 14:46 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  39. 2026-09-22 07:46 UTCOSV refresh
  40. 2026-09-21 20:31 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  41. 2026-09-20 20:14 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  42. 2026-09-18 19:26 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  43. 2026-09-17 19:25 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  44. 2026-09-16 14:06 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  45. 2026-09-16 05:11 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  46. 2026-09-15 03:08 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  47. 2026-09-13 16:44 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  48. 2026-09-12 14:58 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  49. 2026-09-11 14:50 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  50. 2026-09-11 09:34 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  51. 2026-09-08 21:58 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  52. 2026-09-07 15:59 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  53. 2026-09-06 13:45 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  54. 2026-09-05 15:26 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  55. 2026-09-04 13:58 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  56. 2026-09-04 05:04 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  57. 2026-09-03 05:00 UTCOSV refresh
  58. 2026-09-02 14:09 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  59. 2026-09-01 13:51 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  60. 2026-09-01 04:35 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  61. 2026-08-30 19:15 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  62. 2026-08-30 01:20 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  63. 2026-08-28 21:39 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  64. 2026-08-27 14:23 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  65. 2026-08-26 14:44 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  66. 2026-08-25 13:46 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  67. 2026-08-24 14:14 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  68. 2026-08-23 00:17 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  69. 2026-08-21 23:47 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  70. 2026-08-20 22:53 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  71. 2026-08-19 17:02 UTCEPSS rescoreEPSS 0.5% · 39th percentile

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2023-50257?
CVE-2023-50257 is a critical-severity vulnerability; its CVE record was published on February 19, 2024. eProsima Fast DDS (formerly Fast RTPS) is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Even with the application of SROS2, due to the issue where the data (p[UD]) and guid values used to disconnect between nodes are not encrypted, a vulnerability…
When was the CVE record for CVE-2023-50257 published?
The CVE record for CVE-2023-50257 was published on February 19, 2024. 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 January 2, 2026; the record at its source may have been updated since.
Is CVE-2023-50257 actively exploited?
CVE-2023-50257 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (41st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-50257?
CVE-2023-50257 has a CVSS v3 base score of 9.6 (NVD).
How do I remediate CVE-2023-50257?
A fix for CVE-2023-50257 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-50257

Explore →

Is Your Infrastructure Affected by CVE-2023-50257?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs