Vulnerability-Lookup

GHSA-HR8M-7MWF-V24X

Vulnerability from github – Published: 2026-05-04 03:31 – Updated: 2026-05-04 03:31

Details

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.

Severity ?

9.0 (Critical)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-7372"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-04T01:16:04Z",
    "severity": "CRITICAL"
  },
  "details": "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.\n\n#### Stack-overflow via unconstrained sscanf\n\nThe call to `sscanf` at [1] to split the `Buffer` variable into the `username` and `password` variables doesn\u0027t limit the size of the extracted content to match the destination buffers\u0027 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. \n\n\n\nThe 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.",
  "id": "GHSA-hr8m-7mwf-v24x",
  "modified": "2026-05-04T03:31:28Z",
  "published": "2026-05-04T03:31:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-7372"
    },
    {
      "type": "WEB",
      "url": "https://talosintelligence.com/vulnerability_reports"
    },
    {
      "type": "WEB",
      "url": "https://www.geovision.com.tw/cyber_security.php"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-7372 (GCVE-0-2026-7372)

Vulnerability from cvelistv5 – Published: 2026-05-04 00:47 – Updated: 2026-05-15 07:45

Title

GeoVision GV-VMS V20 WebCam Server Login stack overflow vulnerability

Summary

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.

Severity ?

9 (Critical)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

CWE

CWE-787 - Out-of-bounds write

Assigner

References

2 references

URL	Tags
https://www.geovision.com.tw/cyber_security.php	vendor-advisory
https://talosintelligence.com/vulnerability_reports/	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
GeoVision Inc.	GV-VMS V20.0.2	Affected: 20.0.2 Unaffected: 20.0.2.10 Unaffected: 20.1.0.0

Date Public ?

2026-04-27 00:00

Credits

Philippe Laulheret of Cisco Talos. Kelly Patterson of Cisco Talos. Martin Zeiser of Cisco Talos.

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-HR8M-7MWF-V24X

Stack-overflow via unconstrained sscanf

CVE-2026-7372 (GCVE-0-2026-7372)

Tags

Sightings

Nomenclature