How severe is CVE-2025-48389?

CVE-2025-48389 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-48389 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-48389?

CVE-2025-48389 affects Freescout. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-48389?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-48389 have an EU (EUVD) identifier?

Yes. CVE-2025-48389 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-28219.

When was CVE-2025-48389 published?

CVE-2025-48389 was published on 2025-05-29 and last updated on 2026-06-17.

CVE-2025-48389

CVE-2025-48389 is a high-severity vulnerability in Freescout with a CVSS 3.x base score of 7.2. 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-502.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v4: 8.6
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-28219
Weakness: CWE-502
Affected product: Freescout
Published: 2025-05-29
Last modified: 2026-06-17

Description

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.178, FreeScout is vulnerable to deserialization of untrusted data due to insufficient validation. Through the set function, a string with a serialized object can be passed, and when getting an option through the get method, deserialization will occur, which will allow arbitrary code execution This issue has been patched in version 1.8.178.

Frequently asked questions

What is CVE-2025-48389?: FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.178, FreeScout is vulnerable to deserialization of untrusted data due to insufficient validation. Through the set function, a string with a serialized object can be passed, and when getting an option through the get method, deserialization will occur, which will allow arbitrary code execution This issue has been patched in version 1.8.178.
How severe is CVE-2025-48389?: CVE-2025-48389 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-48389 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-48389?: CVE-2025-48389 affects Freescout. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-48389?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-48389 have an EU (EUVD) identifier?: Yes. CVE-2025-48389 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-28219.
When was CVE-2025-48389 published?: CVE-2025-48389 was published on 2025-05-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:freescout:freescout:*:*:*:*:*:*:*:*

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