Metrics
Affected Vendors & Products
No advisories yet.
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Tue, 29 Sep 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Sat, 26 Sep 2026 10:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Zammad
Zammad zammad |
|
| Vendors & Products |
Zammad
Zammad zammad |
Fri, 25 Sep 2026 18:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, when Zammad checks the digital signature on an incoming S/MIME-signed email, it does not verify that the signing certificate is genuinely trusted, it only checks whether a certificate with a matching name is already stored in the system. An attacker can create their own certificate using the name of a real, previously trusted sender and use it to send a forged email. Zammad will display that email with the same "validly signed" indicator as a genuine message from the real sender, even though the attacker never had access to that sender's actual certificate or private key. This issue is fixed in version 7.1.2. | |
| Title | Zammad: S/MIME signature verification allows forged sender impersonation | |
| Weaknesses | CWE-290 CWE-295 CWE-347 |
|
| References |
| |
| Metrics |
cvssV4_0
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-09-29T18:08:05.375Z
Reserved: 2026-09-01T20:05:09.424Z
Link: CVE-2026-84465
Updated: 2026-09-29T18:07:57.073Z
Status : Deferred
Published: 2026-09-25T19:17:58.123
Modified: 2026-09-29T19:17:27.050
Link: CVE-2026-84465
No data.
OpenCVE Enrichment
Updated: 2026-09-26T10:00:15Z