How severe is CVE-2025-41347?

CVE-2025-41347 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-41347 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-41347?

CVE-2025-41347 affects Iest Winplus. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-41347?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-41347 have an EU (EUVD) identifier?

Yes. CVE-2025-41347 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-197979.

When was CVE-2025-41347 published?

CVE-2025-41347 was published on 2025-11-18 and last updated on 2026-06-17.

CVE-2025-41347

CVE-2025-41347 is a critical-severity vulnerability in Iest Winplus with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 8.7
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-197979
Weakness: CWE-434
Affected product: Iest Winplus
Published: 2025-11-18
Last modified: 2026-06-17

Description

Unlimited upload vulnerability for dangerous file types in WinPlus v24.11.27 from Informática del Este. This vulnerability allows an attacker to upload a 'webshell' by sending a POST request to '/WinplusPortal/ws/sWinplus.svc/json/uploadfile'.

Frequently asked questions

What is CVE-2025-41347?: Unlimited upload vulnerability for dangerous file types in WinPlus v24.11.27 from Informática del Este. This vulnerability allows an attacker to upload a 'webshell' by sending a POST request to '/WinplusPortal/ws/sWinplus.svc/json/uploadfile'.
How severe is CVE-2025-41347?: CVE-2025-41347 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-41347 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-41347?: CVE-2025-41347 affects Iest Winplus. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-41347?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-41347 have an EU (EUVD) identifier?: Yes. CVE-2025-41347 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-197979.
When was CVE-2025-41347 published?: CVE-2025-41347 was published on 2025-11-18 and last updated on 2026-06-17.

References

https://www.incibe.es/en/incibe-cert/notices/aviso/stored-cross-site-scripting-xss-winplus-informatica-del-este

Affected products (1)

cpe:2.3:a:iest:winplus:24.11.27:*:*:*:-:*:*:*

More vulnerabilities in Iest Winplus

CVE-2025-41348 — Critical (CVSS 9.8): SQL injection vulnerability in WinPlus v24.11.27 by Informática del Este. This vulnerability allows an attacker…
CVE-2025-41346 — Critical (CVSS 9.8): Faulty authorization control in software WinPlus v24.11.27 by Informática del Este that allows another user to be…
CVE-2025-41350 — Medium (CVSS 5.4): Stored Cross-site Scripting (XSS)vylnerability type in WinPlus v24.11.27 byInformática del Este that consist of an…
CVE-2025-41349 — Medium (CVSS 5.4): Stored Cross-site Scripting (XSS)vylnerability type in WinPlus v24.11.27 byInformática del Este that consist of an…

All CVEs affecting Iest Winplus →

Other CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities

CVE-2026-48283 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
CVE-2026-48276 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
CVE-2026-57700 — Critical (CVSS 10.0): Unrestricted Upload of File with Dangerous Type vulnerability in Daan.Dev OMGF Pro allows Using Malicious Files. This…
CVE-2025-69129 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in WordPress & WooCommerce Scraper Plugin, Import Data from Any Site <= 1.0.7…
CVE-2026-40772 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in GeekyBot <= 1.2.2 versions.
CVE-2026-40412 — Critical (CVSS 10.0): Unrestricted upload of file with dangerous type in Azure Orbital Spatio allows an unauthorized attacker to execute code…

Browse all CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities →