CVE-2023-4299

CRITICALNVD 9.09.0—

9.0

Digi RealPort Protocol is vulnerable to a replay attack that may allow an attacker to bypass authentication to access connected equipment.

CVSS v3: 9.0
EG Score: 9.0(medium)
EPSS: 5.7%
KEV: Not listed

Published

August 31, 2023

Last Modified

November 21, 2024

References (4)

ics-cert@hqhttps://www.cisa.gov/news-events/ics-advisories/icsa-23-243-04
ics-cert@hqhttps://www.digi.com/getattachment/resources/security/alerts/realport-cves/Dragos-Disclosure-Statement.pdf
af854a3a-2127-422b-91ae-364da2661108https://www.cisa.gov/news-events/ics-advisories/icsa-23-243-04
af854a3a-2127-422b-91ae-364da2661108https://www.digi.com/getattachment/resources/security/alerts/realport-cves/Dragos-Disclosure-Statement.pdf

Weakness Classification(1)

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

CWE-836

Data Freshness Timeline

(refreshed 10× in last 7d / 10× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-24 18:26 UTCEG score recompute
2026-05-24 18:26 UTCGHSA enrichment
2026-05-23 14:41 UTCOSV refresh

Frequently asked(5)

What is CVE-2023-4299?

CVE-2023-4299 is a critical vulnerability published on August 31, 2023. Digi RealPort Protocol is vulnerable to a replay attack that may allow an attacker to bypass authentication to access connected equipment.

When was CVE-2023-4299 disclosed?

CVE-2023-4299 was first published in the National Vulnerability Database on August 31, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-4299 actively exploited?

CVE-2023-4299 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-4299?

CVE-2023-4299 has a CVSS v3 base score of 9.0 (NVD).

How do I remediate CVE-2023-4299?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-4299, 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.

Dependency Blast Radius

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CVE-2023-4299

📅 Published

🔄 Last Modified

🔗 References (4)