How severe is CVE-2026-25134?

CVE-2026-25134 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-25134 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-2026-25134?

CVE-2026-25134 affects Group-office Group Office. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-25134?

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-2026-25134 have an EU (EUVD) identifier?

Yes. CVE-2026-25134 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5404.

When was CVE-2026-25134 published?

CVE-2026-25134 was published on 2026-02-02 and last updated on 2026-06-17.

CVE-2026-25134

CVE-2026-25134 is a high-severity vulnerability in Group-office Group Office with a CVSS 3.x base score of 8.8. 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-88.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 9.4
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-5404
Weakness: CWE-88
Affected product: Group-office Group Office
Published: 2026-02-02
Last modified: 2026-06-17

Description

Group-Office is an enterprise customer relationship management and groupware tool. Prior to 6.8.150, 25.0.82, and 26.0.5, the MaintenanceController exposes an action zipLanguage which takes a lang parameter and passes it directly to a system zip command via exec(). This can be combined with uploading a crafted zip file to achieve remote code execution. This vulnerability is fixed in 6.8.150, 25.0.82, and 26.0.5.

Frequently asked questions

What is CVE-2026-25134?: Group-Office is an enterprise customer relationship management and groupware tool. Prior to 6.8.150, 25.0.82, and 26.0.5, the MaintenanceController exposes an action zipLanguage which takes a lang parameter and passes it directly to a system zip command via exec(). This can be combined with uploading a crafted zip file to achieve remote code execution. This vulnerability is fixed in 6.8.150, 25.0.82, and 26.0.5.
How severe is CVE-2026-25134?: CVE-2026-25134 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-25134 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-2026-25134?: CVE-2026-25134 affects Group-office Group Office. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-25134?: 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-2026-25134 have an EU (EUVD) identifier?: Yes. CVE-2026-25134 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5404.
When was CVE-2026-25134 published?: CVE-2026-25134 was published on 2026-02-02 and last updated on 2026-06-17.

References

Affected products (1)

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

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