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Drupal Gammu SMS Daemon CVE-2026-76757

| EUVDEUVD-2026-69988 MEDIUM
Buffer Overflow (CWE-119)
2026-09-02 drupal GHSA-839x-rj6p-7cr5
5.9
CVSS 3.1 · Vendor: drupal
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Severity by source

Vendor (drupal) PRIMARY
5.9 MEDIUM
AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
vuln.today AI
5.9 MEDIUM

Admin privileges required (PR:H) and specific memory-corruption conditions (AC:H) match a controlled buffer overflow reachable only by authenticated administrators.

3.1 AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
4.0 AV:N/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (drupal).

CVSS VectorVendor: drupal

Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

Lifecycle Timeline

3
Analysis Generated
Sep 02, 2026 - 19:38 vuln.today
CVSS changed
Sep 02, 2026 - 19:22 NVD
5.9 (MEDIUM)
CVE Published
Sep 02, 2026 - 12:32 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

Vulnerability in Drupal Gammu SMS Daemon. This issue affects Gammu SMS Daemon versions: *.*.

AnalysisAI

Buffer overflow (CWE-119) in the Drupal Gammu SMS Daemon contributed module exposes high-privilege authenticated administrators to memory corruption that yields both confidentiality and integrity compromise. The vulnerability affects all released versions of the module (*.* wildcard CPE), with no patched release confirmed in the provided data. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires: (1) an active Drupal administrator-level account (PR:H) on the target site; (2) the Gammu SMS Daemon contributed module must be installed and enabled; (3) high attack complexity (AC:H) conditions must be met - the exact trigger is not detailed in the available description, but is likely a specific configuration state or crafted input to the SMS gateway interface. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The provided CVSS 3.1 vector (AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N) scores 5.9 (Medium), reflecting a balance between high confidentiality/integrity impact and significant limiting factors: High Attack Complexity (AC:H) and High Privileges Required (PR:H). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation No vendor-released patched version is confirmed from the available data; consult the Drupal security advisory at https://www.drupal.org/sa-contrib-2026-100 for the latest patch status and module update instructions. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-76757 vulnerability details – vuln.today

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