How severe is CVE-2025-52603?

CVE-2025-52603 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2025-52603 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-52603?

CVE-2025-52603 primarily affects Hcltech Connections. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-52603?

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

Does CVE-2025-52603 have an EU (EUVD) identifier?

Yes. CVE-2025-52603 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-207686.

When was CVE-2025-52603 published?

CVE-2025-52603 was published on 2026-02-20 and last updated on 2026-06-17.

CVE-2025-52603

CVE-2025-52603 is a low-severity vulnerability in Hcltech Connections with a CVSS 3.x base score of 3.5. 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-213.

Key facts

Severity: Low (CVSS 3.x base score 3.5)
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-207686
Weakness: CWE-213
Affected product: Hcltech Connections
Published: 2026-02-20
Last modified: 2026-06-17

Description

HCL Connections is vulnerable to information disclosure. In a very specific user navigation scenario, this could allow a user to obtain limited information when a single piece of internal metadata is returned in the browser.

Frequently asked questions

What is CVE-2025-52603?: HCL Connections is vulnerable to information disclosure. In a very specific user navigation scenario, this could allow a user to obtain limited information when a single piece of internal metadata is returned in the browser.
How severe is CVE-2025-52603?: CVE-2025-52603 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2025-52603 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-52603?: CVE-2025-52603 primarily affects Hcltech Connections. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-52603?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-52603 have an EU (EUVD) identifier?: Yes. CVE-2025-52603 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-207686.
When was CVE-2025-52603 published?: CVE-2025-52603 was published on 2026-02-20 and last updated on 2026-06-17.

References

https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0124242

Affected products (12)

cpe:2.3:a:hcltech:connections:7.0:*:*:*:*:*:*:*
cpe:2.3:a:hcltech:connections:8.0:-:*:*:*:*:*:*
cpe:2.3:a:hcltech:connections:8.0:cumulative_release1:*:*:*:*:*:*
cpe:2.3:a:hcltech:connections:8.0:cumulative_release10:*:*:*:*:*:*
cpe:2.3:a:hcltech:connections:8.0:cumulative_release2:*:*:*:*:*:*
cpe:2.3:a:hcltech:connections:8.0:cumulative_release3:*:*:*:*:*:*
cpe:2.3:a:hcltech:connections:8.0:cumulative_release4:*:*:*:*:*:*
cpe:2.3:a:hcltech:connections:8.0:cumulative_release5:*:*:*:*:*:*
cpe:2.3:a:hcltech:connections:8.0:cumulative_release6:*:*:*:*:*:*
cpe:2.3:a:hcltech:connections:8.0:cumulative_release7:*:*:*:*:*:*
cpe:2.3:a:hcltech:connections:8.0:cumulative_release8:*:*:*:*:*:*
cpe:2.3:a:hcltech:connections:8.0:cumulative_release9:*:*:*:*:*:*

More vulnerabilities in Hcltech Connections

CVE-2020-4085 — Medium (CVSS 6.5): "HCL Connections is vulnerable to possible information leakage and could disclose sensitive information via stack trace…
CVE-2019-4209 — Medium (CVSS 6.1): HCL Connections v5.5, v6.0, and v6.5 contains an open redirect vulnerability which could be exploited by an attacker to…
CVE-2023-28018 — Medium (CVSS 5.5): HCL Connections is vulnerable to a denial of service, caused by improper validation on certain requests. Using a…
CVE-2020-4083 — Medium (CVSS 5.5): HCL Connections 6.5 is vulnerable to possible information leakage. Connections could disclose sensitive information via…
CVE-2026-21788 — Medium (CVSS 5.4): HCL Connections is vulnerable to a cross-site scripting attack where an attacker may leverage this issue to execute…
CVE-2024-30112 — Medium (CVSS 5.4): HCL Connections is vulnerable to a cross-site scripting attack where an attacker may leverage this issue to execute…

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CVE-2023-3441 — Medium (CVSS 6.6): An issue has been discovered in GitLab EE/CE affecting all versions starting from 8.0 before 16.4. The product did not…
CVE-2026-6280 — Medium (CVSS 6.5): Exposure of sensitive information due to incompatible policies vulnerability in NOMYSOFT Informatics Education and…
CVE-2025-54831 — Medium (CVSS 6.5): Apache Airflow 3 introduced a change to the handling of sensitive information in Connections. The intent was to…
CVE-2024-7267 — Medium (CVSS 6.5): Exposure of Sensitive Information vulnerability in Naukowa i Akademicka Sieć Komputerowa - Państwowy Instytut…

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