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Classic Buffer OverflowWeakness · CWE-120

CVE-2026-57278

HIGH · 8.3 CVSS v3.1 Published 2026-07-02
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
90/100
Remediation priority · Urgent
Remotely reachable No privileges 8 weeks old

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
GeoWebPlayer (also called "Web Plugin" in the GV-VMS documentation and "WS Player" for VMS-Cloud) is an addon that can be installed with various GeoVision software (GV-VMS, GV-Cloud, ...). It creates a websocket server that expands the capabilities of the various web-interfaces provided by the GeoVision software and may be necessary for them to function properly. The Websocket server can accept various commands coming from localhost. One of them, `connectionInfo` is meant to provide the necessary details to connect to a camera. The handler associated with this command that we call`handle_connection_info` contains multiple instances of string copy that can overflow. The function `handle_connect_info` copies attacker-controlled JSON strings into fixed-size buffers using manual byte-by-byte loops that do not enforce length limits. #### Buffer Overflow in ip field

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

A buffer overflow vulnerability exists in the GeoWebPlayer websocket server's handle_connection_info function. The handler for the 'connectionInfo' command copies attacker-controlled JSON strings from the 'ip' field into fixed-size buffers using manual byte-by-byte loops that lack proper length validation, allowing overflow of the destination buffer.

MitigationImplement proper bounds checking in all string copy operations within handle_connection_info, specifically for the 'ip' field. Replace manual byte-by-byte loops with safe string handling functions that enforce length limits or use dynamically allocated buffers based on actual input size.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
High
Privileges
None
User interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify if GeoWebPlayer is installed
    Search for GeoWebPlayer installation directories, executables, or services on the system. Common paths may include /opt/, /usr/local/, or Program Files on Windows. Check running processes for geo* or websocket-related services.
    Affected if GeoWebPlayer software is present on the system
  2. Determine the installed GeoWebPlayer version
    Locate version information in installation files, README, about dialog, or the executable metadata. Compare the found version against any available version history from the vendor.
    Affected if The installed version matches or precedes the fixed version for this vulnerability (version comparison required against vendor release notes)
  3. Verify the websocket server component is running
    Check if the GeoWebPlayer websocket server process is active. Use commands like netstat, ss, or process inspection tools to identify listening ports typically associated with GeoWebPlayer (consult vendor documentation for default ports).
    Affected if The websocket server process is running and accepting connections
  4. Confirm connectionInfo command handler exposure
    If the websocket server is running, test whether the connectionInfo command is exposed by sending a JSON request with an ip field to the websocket endpoint. Alternatively, review server-side logs or configuration for evidence of this command handler being registered.
    Affected if The connectionInfo command handler is accessible and processes requests containing the ip field
  5. Inspect handle_connection_info function or configuration
    If source code or configuration is available, examine the handle_connection_info implementation for manual byte-by-byte copy loops operating on the ip field without bounds checking. For runtime detection, monitor for crashes or abnormal behavior when sending long ip field values.
    Affected if The handle_connection_info function uses manual string copying without proper length validation on the ip field

A user is affected if GeoWebPlayer is installed with a vulnerable version, the websocket server is running, and the connectionInfo command handler processes ip field data using unbounded string copy operations.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement proper bounds checking in all string copy operations within handle_connection_info, specifically for the 'ip' field. Replace manual byte-by-byte loops with safe string handling functions that enforce length limits or use dynamically allocated buffers based on actual input size.

Have this fixed Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-57278 in production — separate from our analysis above.

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What this is

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What belongs here
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