CVE-2026-18188: CWE-134 Use of Externally-Controlled format string in ASUSTOR Inc. ADM
A format string vulnerability was found in the Rsync Backup on the ADM. The vulnerability occurs because user-controlled rsync backup configuration or log data may be processed through an unsafe format string operation. An authenticated attacker can exploit this issue to disclose memory information or cause denial of service of the affected backup component. Affected products and versions include: from ADM 4.1.0 through ADM 4.3.3.RUN1 as well as from ADM 5.0.0 through ADM 5.1.3.RI81.
AI Analysis
Technical Summary
CVE-2026-18188 is a format string vulnerability in the Rsync Backup feature of ASUSTOR ADM. The vulnerability arises because user-controlled input in backup configuration or logs is processed insecurely via format string operations, enabling an authenticated attacker to disclose memory contents or cause denial of service. The affected versions include ADM 4.1.0 through 4.3.3.RUN1 and 5.0.0 through 5.1.3.RI81. The CVSS 4.0 base score is 7.1, indicating high severity. No vendor advisory or patch information is currently available.
Potential Impact
Successful exploitation can lead to disclosure of sensitive memory information or denial of service of the backup component. This could impact system stability and confidentiality of data handled by the Rsync Backup service. The attacker requires authentication but no user interaction is needed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the Rsync Backup feature to trusted users only and monitor for unusual activity related to backup configurations or logs.
CVE-2026-18188: CWE-134 Use of Externally-Controlled format string in ASUSTOR Inc. ADM
Description
A format string vulnerability was found in the Rsync Backup on the ADM. The vulnerability occurs because user-controlled rsync backup configuration or log data may be processed through an unsafe format string operation. An authenticated attacker can exploit this issue to disclose memory information or cause denial of service of the affected backup component. Affected products and versions include: from ADM 4.1.0 through ADM 4.3.3.RUN1 as well as from ADM 5.0.0 through ADM 5.1.3.RI81.
CVSS v4.0
Score 7.1high
Affected software
ASUSTOR Inc.
ADM
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-18188 is a format string vulnerability in the Rsync Backup feature of ASUSTOR ADM. The vulnerability arises because user-controlled input in backup configuration or logs is processed insecurely via format string operations, enabling an authenticated attacker to disclose memory contents or cause denial of service. The affected versions include ADM 4.1.0 through 4.3.3.RUN1 and 5.0.0 through 5.1.3.RI81. The CVSS 4.0 base score is 7.1, indicating high severity. No vendor advisory or patch information is currently available.
Potential Impact
Successful exploitation can lead to disclosure of sensitive memory information or denial of service of the backup component. This could impact system stability and confidentiality of data handled by the Rsync Backup service. The attacker requires authentication but no user interaction is needed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the Rsync Backup feature to trusted users only and monitor for unusual activity related to backup configurations or logs.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ASUSTOR1
- Date Reserved
- 2026-07-29T01:38:53.717Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a6ac37f9c2644c7f872b18e
Added to database: 07/30/2026, 03:22:39 UTC
Last enriched: 08/06/2026, 13:59:01 UTC
Last updated: 09/12/2026, 22:01:32 UTC
Views: 60
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