CVE-2025-4561

HIGHNVD 8.88.8—

8.8

The KFOX from KingFor has an Arbitrary File Upload vulnerability, allowing remote attackers with regular privilege to upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.

CVSS v3: 8.8
EG Score: 8.8(medium)
EPSS: 79.3%
KEV: Not listed

Published

May 12, 2025

Last Modified

April 15, 2026

Advisory Details (2)

Auto-updated May 23, 2026

No patch confirmed yet. Sources: cert.

cert

奇豐資訊 KFOX - Arbitrary File Upload-TWCERT/CC台灣電腦網路危機處理暨協調中心|企業資安通報協處|資安情資分享|漏洞通報|資安聯盟|資安電子報

https://www.twcert.org.tw/tw/cp-132-10120-269d9-1.html

cert

Kinfor KFOX - Arbitrary File Upload-TWCERT/CC Taiwan Computer Emergency Response Team/Coordination Center

https://www.twcert.org.tw/en/cp-139-10121-ddbfa-2.html

Weakness Classification(1)

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

CWE-434Unrestricted Upload of File with Dangerous Type

Data Freshness Timeline

(refreshed 13× 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.

2026-06-07 15:24 UTCepss_batch
2026-06-06 13:47 UTCepss_batch
2026-06-06 13:47 UTCepss_batch
2026-06-05 22:46 UTCepss_batch
2026-06-05 22:46 UTCepss_batch
2026-06-05 06:10 UTCepss_batch
2026-06-05 06:10 UTCepss_batch
2026-06-04 13:12 UTCepss_batch
2026-06-04 13:12 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 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch

Frequently asked(5)

What is CVE-2025-4561?

CVE-2025-4561 is a high vulnerability published on May 12, 2025. The KFOX from KingFor has an Arbitrary File Upload vulnerability, allowing remote attackers with regular privilege to upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.

When was CVE-2025-4561 disclosed?

CVE-2025-4561 was first published in the National Vulnerability Database on May 12, 2025, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2025-4561 actively exploited?

CVE-2025-4561 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 79.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2025-4561?

CVE-2025-4561 has a CVSS v3 base score of 8.8 (NVD).

How do I remediate CVE-2025-4561?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-4561, 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-2025-4561

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CVE-2025-4561

📅 Published

🔄 Last Modified

📋 Advisory Details (2)