CVE-2026-57273: CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in GeoVision Inc. GeoWebPlayer
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 username field (no key present)
AI Analysis
Technical Summary
GeoWebPlayer, an addon for GeoVision software, includes a Websocket server that accepts commands from localhost. The 'connectionInfo' command handler copies JSON strings into fixed-size buffers using manual byte-by-byte loops without proper length checks, specifically in the username field. This lack of bounds checking results in a classic buffer overflow (CWE-120) vulnerability. The affected version is 1.1.1.0. The CVSS 3.1 score is 8.3, reflecting network attack vector with high complexity, no privileges required, user interaction required, and impacts to confidentiality, integrity, and availability.
Potential Impact
Successful exploitation can lead to arbitrary code execution or denial of service due to buffer overflow in the Websocket server component of GeoWebPlayer. The vulnerability affects confidentiality, integrity, and availability of the affected system. The attack requires user interaction and has high attack complexity but no privileges are needed. The vulnerability is exploitable remotely over the network but only from localhost commands.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Users should monitor GeoVision's advisories for updates. Until a fix is available, restricting access to localhost commands and minimizing exposure of the GeoWebPlayer component may reduce risk.
CVE-2026-57273: CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in GeoVision Inc. GeoWebPlayer
Description
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 username field (no key present)
CVSS v3.1
Score 8.3high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
GeoWebPlayer, an addon for GeoVision software, includes a Websocket server that accepts commands from localhost. The 'connectionInfo' command handler copies JSON strings into fixed-size buffers using manual byte-by-byte loops without proper length checks, specifically in the username field. This lack of bounds checking results in a classic buffer overflow (CWE-120) vulnerability. The affected version is 1.1.1.0. The CVSS 3.1 score is 8.3, reflecting network attack vector with high complexity, no privileges required, user interaction required, and impacts to confidentiality, integrity, and availability.
Potential Impact
Successful exploitation can lead to arbitrary code execution or denial of service due to buffer overflow in the Websocket server component of GeoWebPlayer. The vulnerability affects confidentiality, integrity, and availability of the affected system. The attack requires user interaction and has high attack complexity but no privileges are needed. The vulnerability is exploitable remotely over the network but only from localhost commands.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Users should monitor GeoVision's advisories for updates. Until a fix is available, restricting access to localhost commands and minimizing exposure of the GeoWebPlayer component may reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GV
- Date Reserved
- 2026-06-24T05:48:03.740Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a45d94127e9c7971906c927
Added to database: 07/02/2026, 03:21:37 UTC
Last enriched: 07/09/2026, 09:24:04 UTC
Last updated: 08/11/2026, 12:41:11 UTC
Views: 110
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