CVE-2023-25556

HIGHNVD 8.38.3—

8.3

A CWE-287: Improper Authentication vulnerability exists that could allow a device to be compromised when a key of less than seven digits is entered and the attacker has access to the KNX installation.

CVSS v3: 8.3
EG Score: 8.3(medium)
EPSS: 28.2%
KEV: Not listed

Published

April 18, 2023

Last Modified

November 21, 2024

References (2)

cybersecurity@sehttps://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2023-045-03&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2023-045-03.pdf
af854a3a-2127-422b-91ae-364da2661108https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2023-045-03&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2023-045-03.pdf

Weakness Classification(1)

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

CWE-287Improper Authentication

Data Freshness Timeline

(refreshed 17× in last 7d / 20× 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.

2026-06-06 13:46 UTCepss_batch
2026-06-06 13:46 UTCepss_batch
2026-06-05 22:46 UTCepss_batch
2026-06-05 22:46 UTCepss_batch
2026-06-05 22:46 UTCepss_batch
2026-06-05 06:09 UTCepss_batch
2026-06-05 06:09 UTCepss_batch
2026-06-04 13:11 UTCepss_batch
2026-06-04 13:11 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:43 UTCepss_batch

Frequently asked(5)

What is CVE-2023-25556?

CVE-2023-25556 is a high vulnerability published on April 18, 2023. A CWE-287: Improper Authentication vulnerability exists that could allow a device to be compromised when a key of less than seven digits is entered and the attacker has access to the KNX installation.

When was CVE-2023-25556 disclosed?

CVE-2023-25556 was first published in the National Vulnerability Database on April 18, 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-2023-25556 actively exploited?

CVE-2023-25556 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 28.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-25556?

CVE-2023-25556 has a CVSS v3 base score of 8.3 (NVD).

How do I remediate CVE-2023-25556?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-25556, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-25556

Explore →

Is Your Infrastructure Affected by CVE-2023-25556?

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

Start Free Scan →Browse All CVEs

CVE-2023-25556

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-25556?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)