Critical
Group-Office is vulnerable to RCE due to Command Injection via TNEF Attachment Handler
Type: advisorySources: OSV
Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.150, 25.0.82, and 26.0.5, there is a remote code execution (RCE) vulnerability in Group-Office. 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. This issue has been patched in versions 6.8.150, 25.0.82, and 26.0.5.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-25512
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 13:37 UTC · Revision 1
Source evidence
Group-Office is vulnerable to RCE due to Command Injection via TNEF Attachment Handler
core-osv · Original sourcePublished 4 Feb 2026, 20:39 UTC
Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.150, 25.0.82, and 26.0.5, there is a remote code execution (RCE) vulnerability in Group-Office. 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. This issue has been patched in versions 6.8.150, 25.0.82, and 26.0.5.
osv:CVE-2026-25512
Complete source record
{
"id": "b551e4727da491056f21ead051262368f1055818a92bc8c81082b5b06ec6357f",
"url": "https://osv.dev/vulnerability/CVE-2026-25512",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Group-Office is vulnerable to RCE due to Command Injection via TNEF Attachment Handler",
"summary": "Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.150, 25.0.82, and 26.0.5, there is a remote code execution (RCE) vulnerability in Group-Office. 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. This issue has been patched in versions 6.8.150, 25.0.82, and 26.0.5.",
"evidence": "osv:CVE-2026-25512",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2026-25512",
"aliases": [
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"GHSA-579w-jvg7-frr4"
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"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"
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"modified": "2026-10-28T02:30:35.854768530Z",
"provider": "osv",
"references": [
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"https://github.com/Intermesh/groupoffice/security/advisories/GHSA-579w-jvg7-frr4",
"https://nvd.nist.gov/vuln/detail/CVE-2026-25512"
],
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"source_id": "core-osv",
"document_id": 503203,
"published_at": "2026-02-04T20:39:08.039+00:00"
}