How severe is CVE-2025-65319?

CVE-2025-65319 has a CVSS 3.x base score of 9.1, 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 none.

Is CVE-2025-65319 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-65319?

CVE-2025-65319 affects Blixhq Bluemail. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-65319?

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-2025-65319 have an EU (EUVD) identifier?

Yes. CVE-2025-65319 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-203806.

When was CVE-2025-65319 published?

CVE-2025-65319 was published on 2025-12-16 and last updated on 2026-07-05.

CVE-2025-65319

CVE-2025-65319 is a critical-severity vulnerability in Blixhq Bluemail with a CVSS 3.x base score of 9.1. 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-693.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-203806
Weakness: CWE-693
Affected product: Blixhq Bluemail
Published: 2025-12-16
Last modified: 2026-07-05

Description

When using the attachment interaction functionality, Blue Mail 1.140.103 and below saves documents to a file system without a Mark-of-the-Web tag, which allows attackers to bypass the built-in file protection mechanisms of both Windows OS and third-party software.

Frequently asked questions

What is CVE-2025-65319?: When using the attachment interaction functionality, Blue Mail 1.140.103 and below saves documents to a file system without a Mark-of-the-Web tag, which allows attackers to bypass the built-in file protection mechanisms of both Windows OS and third-party software.
How severe is CVE-2025-65319?: CVE-2025-65319 has a CVSS 3.x base score of 9.1, 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 none.
Is CVE-2025-65319 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-65319?: CVE-2025-65319 affects Blixhq Bluemail. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-65319?: 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-2025-65319 have an EU (EUVD) identifier?: Yes. CVE-2025-65319 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-203806.
When was CVE-2025-65319 published?: CVE-2025-65319 was published on 2025-12-16 and last updated on 2026-07-05.

References

EU advisories (EUVD)

http://blue.com

Affected products (1)

cpe:2.3:a:blixhq:bluemail:*:*:*:*:*:windows:*:*

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