CVE-2025-52603: HCL Connections is vulnerable to information disclosure

Routine

LOW 3.5DOWNGRADE

CVE-2025-52603 is a low-severity flaw (CVSS 3.5) affecting connections. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	3.5 (Low)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.3% (top 77%)
CISA exploited list	No
Weakness	CWE-213
Published	2026-02-20
Last modified	2026-06-17

Publisher (CNA): HCL Software · Vendor: hcltech

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-02-20 16:22 UTCPublished CVE record published
2026-06-17 09:36 UTCUpdated Record last modified

hcltech connections DOWNGRADE

Affected: 7.0 · 8.0 · 8.0 cumulative_release1 · 8.0 cumulative_release10 · 8.0 cumulative_release2 · 8.0 cumulative_release3 · 8.0 cumulative_release4 · 8.0 cumulative_release5

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.0

1. Check installed version

apt-cache policy connections || rpm -q connections || connections --version

2. No fixed release: DOWNGRADE to a release before 7.0 (Debian / Ubuntu)

apt-cache madison connections sudo apt install connections=<VERSION_BEFORE_7.0> sudo apt-mark hold connections

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list connections sudo dnf downgrade connections-<VERSION_BEFORE_7.0> sudo dnf versionlock add connections

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-52603?

connections: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-52603 being exploited?

CVE-2025-52603 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-52603 affect?

CVE-2025-52603 affects connections. Severity is low (CVSS 3.5). 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 urgent is CVE-2025-52603?

Priority 18/100. No elevated risk signals yet.

Related CVEs

CVE-2026-56537 LOW 3.5 UPGRADE HCL Connections is vulnerable to information disclosure which could allow a user to obtain sensitive informati
CVE-2026-56538 LOW 3.5 UPGRADE An endpoint in HCL Connections is vulnerable to information disclosure
CVE-2025-52639 LOW 3.5 DOWNGRADE HCL Connections is vulnerable to a sensitive information disclosure vulnerability which could allow a user to
CVE-2026-21788 MEDIUM 5.4 DOWNGRADE HCL Connections is vulnerable to a cross-site scripting attack where an attacker may leverage this issue to ex
CVE-2025-31961 LOW 3.7 DOWNGRADE HCL Connections contains a broken access control vulnerability that may allow unauthorized user to update data

References

← Back to latest CVEs