CVE-2023-50257

CRITICALNVD 9.69.6—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.6 under NVD CVSS v3. EPSS exploit probability: 0.5%, top 62% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
9.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.6Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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
9.6(medium)
EG Risk
59(Track*)
EG Risk 59/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity96% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
39%
KEV
Not listed

Published

February 19, 2024

Last Modified

January 2, 2026

Advisory Details (5)

Auto-updated Jul 13, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit.
github Patch Available🟡 PoC Available

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 v3.0.0 (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 v2.10.5 (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 v3.0.0 (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 v3.0.0 (contains commit 072cbc9d6a71)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 46× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 111 total refreshes for this CVE.

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Frequently asked(5)

What is CVE-2023-50257?
CVE-2023-50257 is a critical vulnerability 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 CVE-2023-50257 disclosed?
CVE-2023-50257 was first published in the National Vulnerability Database on February 19, 2024, with the most recent update on January 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-50257 actively exploited?
CVE-2023-50257 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 61.4% of all 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?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-50257, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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