CVE-2026-25512 Details.
Group-Office < 26.0.5 - Remote Code Execution
Atlas does not check this one. Needs an outside server.
To test for this one, the site would have to contact a server outside your network and report back. Atlas does not run checks that need that, so it does not run this one.
About CVE-2026-25512. What It Means.
Group-Office before versions 6.8.150, 25.0.82, and 26.0.5 is vulnerable to remote code execution via OS command injection. The endpoint email/message/tnefAttachmentFromTempFile directly concatenates the user-controlled parameter tmp_file into an exec() call. By injecting shell metacharacters into tmp_file, an authenticated attacker can execute arbitrary system commands on the server.
Affected Product. What Is Hit.
- Vendor
- intermesh
- Product
- Intermesh Group Office
FAQ
Common Questions.
Group-Office < 26.0.5 - Remote Code Execution. Group-Office before versions 6.8.150, 25.0.82, and 26.0.5 is vulnerable to remote code execution via OS command injection. The endpoint email/message/tnefAttachmentFromTempFile directly concatenates the user-controlled parameter tmp_file into an exec() call. By injecting shell metacharacters into tmp_file, an authenticated attacker can execute arbitrary system commands on the server.
No. To test for this one, the site would have to contact a server outside your network and report back. Atlas does not run checks that need that, so it does not run this one. The facts about CVE-2026-25512 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-25512 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update Intermesh Group Office to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-25512. Atlas does not run a check for it, so nothing here says whether a particular site is affected.