How severe is CVE-2025-55251?

CVE-2025-55251 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over local access with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2025-55251 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-55251?

CVE-2025-55251 affects Hcltech Aion. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-55251?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-55251 have an EU (EUVD) identifier?

Yes. CVE-2025-55251 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3204.

When was CVE-2025-55251 published?

CVE-2025-55251 was published on 2026-01-19 and last updated on 2026-06-17.

CVE-2025-55251

CVE-2025-55251 is a low-severity vulnerability in Hcltech Aion with a CVSS 3.x base score of 3.1. 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: Low (CVSS 3.x base score 3.1)
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3204
Weakness: CWE-434
Affected product: Hcltech Aion
Published: 2026-01-19
Last modified: 2026-06-17

Description

HCL AION is affected by an Unrestricted File Upload vulnerability. This can allow malicious file uploads, potentially resulting in unauthorized code execution or system compromise.

Frequently asked questions

What is CVE-2025-55251?: HCL AION is affected by an Unrestricted File Upload vulnerability. This can allow malicious file uploads, potentially resulting in unauthorized code execution or system compromise.
How severe is CVE-2025-55251?: CVE-2025-55251 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over local access with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2025-55251 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-55251?: CVE-2025-55251 affects Hcltech Aion. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-55251?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-55251 have an EU (EUVD) identifier?: Yes. CVE-2025-55251 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3204.
When was CVE-2025-55251 published?: CVE-2025-55251 was published on 2026-01-19 and last updated on 2026-06-17.

References

https://support.hcl-software.com/kb_view.do?sys_kb_id=4b92474633de7ad4159a05273e5c7b4b&searchTerm=kb0127995#

Affected products (1)

cpe:2.3:a:hcltech:aion:2.0.0:*:*:*:*:*:*:*

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

CVE-2026-39770 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in Doctreat <= 1.7.0 versions.
CVE-2026-32579 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in Kognetiks Chatbot for WordPress <= 2.4.9 versions.
CVE-2026-102427 — Critical (CVSS 10.0): Joomla Extension - ordasoft.com - Unauthenticated Remote Code Execution in OrdaSoft Joomla CCK < 8.3.16 -…
CVE-2026-4357 — Critical (CVSS 10.0): The Embed HTML5 Game WordPress plugin through 1.3 does not properly restrict who can upload files via the plugin, as…
CVE-2026-84147 — Critical (CVSS 10.0): This vulnerability exists in the ERP system due to improper authentication controls and inadequate file type validation…
CVE-2026-81780 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in Hash Form <= 1.4.2 versions.

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