How severe is CVE-2025-52373?

CVE-2025-52373 has a CVSS 3.x base score of 4.6, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-52373 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-52373?

CVE-2025-52373 primarily affects Hmailserver. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-52373?

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

Does CVE-2025-52373 have an EU (EUVD) identifier?

Yes. CVE-2025-52373 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22113.

When was CVE-2025-52373 published?

CVE-2025-52373 was published on 2025-07-21 and last updated on 2026-06-17.

CVE-2025-52373

CVE-2025-52373 is a medium-severity vulnerability in Hmailserver with a CVSS 3.x base score of 4.6. 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-321.

Key facts

Severity: Medium (CVSS 3.x base score 4.6)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-22113
Weakness: CWE-321
Affected product: Hmailserver
Published: 2025-07-21
Last modified: 2026-06-17

Description

Use of hardcoded cryptographic key in BlowFish.cpp in hMailServer 5.8.6 and 5.6.9-beta allows attacker to decrypt passwords used in database connections from hMailServer.ini config file.

Frequently asked questions

What is CVE-2025-52373?: Use of hardcoded cryptographic key in BlowFish.cpp in hMailServer 5.8.6 and 5.6.9-beta allows attacker to decrypt passwords used in database connections from hMailServer.ini config file.
How severe is CVE-2025-52373?: CVE-2025-52373 has a CVSS 3.x base score of 4.6, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-52373 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-52373?: CVE-2025-52373 primarily affects Hmailserver. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-52373?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-52373 have an EU (EUVD) identifier?: Yes. CVE-2025-52373 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22113.
When was CVE-2025-52373 published?: CVE-2025-52373 was published on 2025-07-21 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:hmailserver:hmailserver:5.6.9:beta:*:*:*:*:*:*
cpe:2.3:a:hmailserver:hmailserver:5.8.6:*:*:*:*:*:*:*

More vulnerabilities in Hmailserver

CVE-2013-5571 — Medium (CVSS 5.9): HMailServer 5.3.x and prior: Memory Corruption which could cause DOS
CVE-2025-52372 — Medium (CVSS 5.1): An issue in hMailServer v.5.8.6 allows a local attacker to obtain sensitive information via the…
CVE-2025-52374 — Medium (CVSS 4.6): Use of hardcoded cryptographic key in Encryption.cs in hMailServer 5.8.6 and 5.6.9-beta allows attacker to decrypt…
CVE-2008-3676 — Medium (CVSS 4.3): Unspecified vulnerability in the IMAP server in hMailServer 4.4.1 allows remote authenticated users to cause a denial…

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