CVE-2023-43261

HIGHNVD 7.59.0▲Weaponized

7.5

An information disclosure in Milesight UR5X, UR32L, UR32, UR35, UR41 before v35.3.0.7 allows attackers to access sensitive router components.

CVSS v3: 7.5
EG Score: 9.0(high)
EPSS: 99.8%
KEV: Not listed

Published

October 4, 2023

Last Modified

May 1, 2025

References (12)

cve@mitrehttp://milesight.com
cve@mitrehttp://packetstormsecurity.com/files/176988/Milesight-UR5X-UR32L-UR32-UR35-UR41-Credential-Leakage.html
cve@mitrehttp://ur5x.com
cve@mitrehttps://github.com/win3zz/CVE-2023-43261
cve@mitrehttps://medium.com/%40win3zz/inside-the-router-how-i-accessed-industrial-routers-and-reported-the-flaws-29c34213dfdf
cve@mitrehttps://support.milesight-iot.com/support/home
af854a3a-2127-422b-91ae-364da2661108http://milesight.com
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/176988/Milesight-UR5X-UR32L-UR32-UR35-UR41-Credential-Leakage.html
af854a3a-2127-422b-91ae-364da2661108http://ur5x.com
af854a3a-2127-422b-91ae-364da2661108https://github.com/win3zz/CVE-2023-43261
af854a3a-2127-422b-91ae-364da2661108https://medium.com/%40win3zz/inside-the-router-how-i-accessed-industrial-routers-and-reported-the-flaws-29c34213dfdf
af854a3a-2127-422b-91ae-364da2661108https://support.milesight-iot.com/support/home

Weakness Classification(1)

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

CWE-532Insertion of Sensitive Information into Log File

Data Freshness Timeline

(refreshed 6× in last 7d / 13× 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.

2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 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 16:32 UTCEG score recompute
2026-05-24 16:32 UTCGHSA enrichment

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

GitHub PoCwin3zz/CVE-2023-43261
First seen Sep 28, 2023
CVE-2023-43261 - Credential Leakage Through Unprotected System Logs and Weak Password Encryption
Open source ↗
Nucleihttp/cves/2023/CVE-2023-43261.yaml
First seen Jan 1, 2023
Milesight Routers - Information Disclosure
Open source ↗

Frequently asked(5)

What is CVE-2023-43261?

CVE-2023-43261 is a high vulnerability published on October 4, 2023. An information disclosure in Milesight UR5X, UR32L, UR32, UR35, UR41 before v35.3.0.7 allows attackers to access sensitive router components.

When was CVE-2023-43261 disclosed?

CVE-2023-43261 was first published in the National Vulnerability Database on October 4, 2023, with the most recent update on May 1, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-43261 actively exploited?

CVE-2023-43261 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-43261?

CVE-2023-43261 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.

How do I remediate CVE-2023-43261?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-43261, 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-2023-43261

📅 Published

🔄 Last Modified

🔗 References (12)

Weakness Classification(1)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-43261?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (12)

Frequently asked(5)

Related CVEs(same CWE)