CVE-2026-79300
SEP sesam Improper Authorization and MFA Bypass Vulnerability
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.
INFO
Published Date :
Sept. 12, 2026, 10:20 p.m.
Last Modified :
Sept. 12, 2026, 10:20 p.m.
Remotely Exploit :
Yes !
Source :
mitre
Affected Products
The following products are affected by CVE-2026-79300
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | LOW | 8254265b-2729-46b6-b9e3-3dfca2d5bfca |
Solution
- Update SEP sesam to version 5.2.0.24 or later.
- Review and enforce consistent username casing.
- Re-register and verify all MFA authenticators.
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CVE-2026-79300 vulnerability anywhere in the article.