How severe is CVE-2025-48366?

CVE-2025-48366 has a CVSS 3.x base score of 5.4, 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-2025-48366 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-48366?

CVE-2025-48366 affects Intermesh Group-office. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-48366?

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

Does CVE-2025-48366 have an EU (EUVD) identifier?

Yes. CVE-2025-48366 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16174.

When was CVE-2025-48366 published?

CVE-2025-48366 was published on 2025-05-22 and last updated on 2026-06-17.

CVE-2025-48366

CVE-2025-48366 is a medium-severity vulnerability in Intermesh Group-office with a CVSS 3.x base score of 5.4. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v4: 6.9
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-16174
Weakness: CWE-79
Affected product: Intermesh Group-office
Published: 2025-05-22
Last modified: 2026-06-17

Description

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.119 and 25.0.20, a stored and blind XSS vulnerability exists in the Phone Number field of the user profile within the GroupOffice application. This allows a malicious actor to inject persistent JavaScript payloads, which are triggered in the context of another user when they view the Address Book. Successful exploitation enables actions such as forced redirects, unauthorized fetch requests, or other arbitrary JavaScript execution without user interaction. Versions 6.8.119 and 25.0.20 contain a fix for the issue.

Frequently asked questions

What is CVE-2025-48366?: Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.119 and 25.0.20, a stored and blind XSS vulnerability exists in the Phone Number field of the user profile within the GroupOffice application. This allows a malicious actor to inject persistent JavaScript payloads, which are triggered in the context of another user when they view the Address Book. Successful exploitation enables actions such as forced redirects, unauthorized fetch requests, or other arbitrary JavaScript execution without user interaction. Versions 6.8.119 and 25.0.20 contain a fix for the issue.
How severe is CVE-2025-48366?: CVE-2025-48366 has a CVSS 3.x base score of 5.4, 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-2025-48366 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-48366?: CVE-2025-48366 affects Intermesh Group-office. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-48366?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-48366 have an EU (EUVD) identifier?: Yes. CVE-2025-48366 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16174.
When was CVE-2025-48366 published?: CVE-2025-48366 was published on 2025-05-22 and last updated on 2026-06-17.

References

https://github.com/Intermesh/groupoffice/security/advisories/GHSA-phhq-3h8f-qxpx

Affected products (1)

cpe:2.3:a:intermesh:group-office:*:*:*:*:*:*:*:*

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