No advisories yet.
Solution
The issue is fixed in latest release versions >= v5.2.0.24. It is strongly recommended to update, if AD authentication is in use.
Workaround
No workaround given by the vendor.
Tue, 15 Sep 2026 18:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Case-sensitive Username Handling Enables Duplicate MFA Authenticators in SEP sesam |
Tue, 15 Sep 2026 03:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | MFA Bypass via Username Case Sensitivity in SEP sesam |
Mon, 14 Sep 2026 21:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | MFA Bypass via Username Case Sensitivity in SEP sesam | |
| Metrics |
ssvc
|
Mon, 14 Sep 2026 06:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Multiple SEP sesam User Accounts via Case Sensitivity Allowing Extra MFA Factor |
Sun, 13 Sep 2026 21:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Multiple SEP sesam User Accounts via Case Sensitivity Allowing Extra MFA Factor |
Sun, 13 Sep 2026 20:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Sep
Sep sesam |
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| Vendors & Products |
Sep
Sep sesam |
Sun, 13 Sep 2026 14:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | SEP sesam MFA Bypass via Username Case Handling |
Sun, 13 Sep 2026 00:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | SEP sesam MFA Bypass via Username Case Handling |
Sat, 12 Sep 2026 22:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | SEP sesam before 5.2.0.24 mishandles User Authorization with MFA. If AD authentication is configured and MFA is enforced, an attacker can create a second OTP access capability. SEP sesam and Active Directory handle username capitalization differently, which may allow multiple SEP sesam user accounts to be created for the same Active Directory (AD) account. Active Directory treats usernames as case-insensitive, while SEP sesam distinguishes between different letter casing. As a result, the same AD user can be represented by multiple SEP sesam user accounts that differ only in username capitalization. When Active Directory authentication is configured and multi-factor authentication (MFA) is enforced, this behavior may allow an additional OTP Authenticator to be registered for the same AD account, reducing the effectiveness of MFA protection. | |
| Weaknesses | CWE-180 | |
| References |
| |
| Metrics |
cvssV3_1
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-09-14T16:22:53.589Z
Reserved: 2026-08-25T06:14:33.619Z
Link: CVE-2026-79300
Updated: 2026-09-14T16:22:47.936Z
Status : Received
Published: 2026-09-12T23:17:00.893
Modified: 2026-09-14T17:17:51.533
Link: CVE-2026-79300
No data.
OpenCVE Enrichment
Updated: 2026-09-15T18:00:17Z