A stack overflow vulnerability exists in the WebCam Server Login functionality of GeoVision GV-VMS V20 20.0.2. A specially crafted HTTP request can lead to an arbitrary code execution. An attacker can make an unauthenticated HTTP request to trigger this vulnerability.
#### Stack-overflow via unconstrained sscanf
The call to `sscanf` at [1] to split the `Buffer` variable into the `username` and `password` variables doesn't limit the size of the extracted content to match the destination buffers' sizes. In this case, if either the username or password decoded from the authorization string exceeds `40` characters (the size the stack variables `username` and `password`) then a stack overflow will occur.
The data is controlled by an attacker, but sronger constraints (e.g. no null bytes) may make exploitation harder. A successful attack could lead to full code execution as SYSTEM on the machine running the service.
Metrics
Affected Vendors & Products
References
History
Tue, 05 May 2026 02:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Geovision gv-vms Firmware
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| CPEs | cpe:2.3:h:geovision:gv-vms:20:*:*:*:*:*:*:* cpe:2.3:o:geovision:gv-vms_firmware:*:*:*:*:*:*:*:* |
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| Vendors & Products |
Geovision gv-vms Firmware
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Mon, 04 May 2026 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Geovision
Geovision gv-vms |
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| Vendors & Products |
Geovision
Geovision gv-vms |
Mon, 04 May 2026 01:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A stack overflow vulnerability exists in the WebCam Server Login functionality of GeoVision GV-VMS V20 20.0.2. A specially crafted HTTP request can lead to an arbitrary code execution. An attacker can make an unauthenticated HTTP request to trigger this vulnerability. #### Stack-overflow via unconstrained sscanf The call to `sscanf` at [1] to split the `Buffer` variable into the `username` and `password` variables doesn't limit the size of the extracted content to match the destination buffers' sizes. In this case, if either the username or password decoded from the authorization string exceeds `40` characters (the size the stack variables `username` and `password`) then a stack overflow will occur. The data is controlled by an attacker, but sronger constraints (e.g. no null bytes) may make exploitation harder. A successful attack could lead to full code execution as SYSTEM on the machine running the service. | |
| Title | GeoVision GV-VMS V20 WebCam Server Login stack overflow vulnerability | |
| First Time appeared |
Geovision Inc.
Geovision Inc. gv-vms V20.0.2 |
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| Weaknesses | CWE-787 | |
| CPEs | cpe:2.3:a:geovision_inc.:gv-vms_v20.0.2:20.0.2:*:windows:*:*:*:*:* cpe:2.3:a:geovision_inc.:gv-vms_v20.0.2:21.0.0:*:windows:*:*:*:*:* |
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| Vendors & Products |
Geovision Inc.
Geovision Inc. gv-vms V20.0.2 |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GV
Published:
Updated: 2026-05-05T03:56:12.913Z
Reserved: 2026-04-28T23:12:55.269Z
Link: CVE-2026-7372
No data.
Status : Analyzed
Published: 2026-05-04T01:16:04.730
Modified: 2026-05-05T02:38:55.450
Link: CVE-2026-7372
No data.
OpenCVE Enrichment
Updated: 2026-05-04T19:44:16Z