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CVE-2026-57276— GeoVision GeoWebPlayer Websocket Server connectInfo handler stack-based buffer overflow vulnerability

Quick assessment

Affected
GeoVision Inc. GeoWebPlayer
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GeoVision GeoWebPlayer是中国GeoVision公司的一款媒体设备的语音视频功能模块。 GeoVision GeoWebPlayer V1.1.1.0版本存在缓冲区错误漏洞，该漏洞源于handle_connection_info函数在复制攻击者控制的JSON字符串到固定大小缓冲区时未强制长度限制，导致缓冲区溢出，可能允许攻击者执行任意代码。

CVSS 8.3 · High EPSS 0.40% · P32

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
GeoVision Inc. GeoWebPlayer V1.1.1.0 affected
V1.1.3.0 unaffected
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I. Basic Information for CVE-2026-57276

Vulnerability Information
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Vulnerability Title
GeoVision GeoWebPlayer Websocket Server connectInfo handler stack-based buffer overflow vulnerability
Source: CVE Program / CVE List V5
Vulnerability 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 password field (key present)
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
GeoVision GeoWebPlayer 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GeoVision GeoWebPlayer是中国GeoVision公司的一款媒体设备的语音视频功能模块。 GeoVision GeoWebPlayer V1.1.1.0版本存在缓冲区错误漏洞，该漏洞源于handle_connection_info函数在复制攻击者控制的JSON字符串到固定大小缓冲区时未强制长度限制，导致缓冲区溢出，可能允许攻击者执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
GeoVision Inc. GeoWebPlayer V1.1.1.0 -

II. Public POCs for CVE-2026-57276

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III. Intelligence Information for CVE-2026-57276

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Vendor Advisories for CVE-2026-57276 (1)

Vendor Pages for CVE-2026-57276 (1)

Same Patch Batch · GeoVision Inc. · 2026-07-02 · 18 CVEs total

CVE-2026-13125 8.8 HIGH GeoVision GeoWebPlayer 1.1.1.0 Websocket Server function vulnerability
CVE-2026-57269 8.3 HIGH GeoVision GeoWebPlayer Websocket Server out-of-bounds read vulnerability
CVE-2026-13131 8.3 HIGH GeoVision GeoWebPlayer Websocket Server out-of-bounds read vulnerability
CVE-2026-13132 8.3 HIGH GeoVision GeoWebPlayer Websocket Server out-of-bounds read vulnerability
CVE-2026-57270 8.3 HIGH GeoVision GeoWebPlayer Websocket Server out-of-bounds read vulnerability
CVE-2026-57273 8.3 HIGH GeoVision GeoWebPlayer Websocket Server connectInfo handler stack-based buffer overflow vu
CVE-2026-57268 8.3 HIGH GeoVision GeoWebPlayer Websocket Server out-of-bounds read vulnerability
CVE-2026-57275 8.3 HIGH GeoVision GeoWebPlayer Websocket Server connectInfo handler stack-based buffer overflow vu
CVE-2026-57278 8.3 HIGH GeoVision GeoWebPlayer Websocket Server connectInfo handler stack-based buffer overflow vu
CVE-2026-57274 8.3 HIGH GeoVision GeoWebPlayer Websocket Server connectInfo handler stack-based buffer overflow vu
CVE-2026-57272 8.3 HIGH GeoVision GeoWebPlayer Websocket Server out-of-bounds read vulnerability
CVE-2026-57264 8.3 HIGH GeoVision GeoWebPlayer Websocket Server out-of-bounds read vulnerability
CVE-2026-57267 8.3 HIGH GeoVision GeoWebPlayer Websocket Server out-of-bounds read vulnerability
CVE-2026-57277 8.3 HIGH GeoVision GeoWebPlayer Websocket Server connectInfo handler stack-based buffer overflow vu
CVE-2026-57266 8.3 HIGH GeoVision GeoWebPlayer Websocket Server out-of-bounds read vulnerability
CVE-2026-57265 8.3 HIGH GeoVision GeoWebPlayer Websocket Server out-of-bounds read vulnerability
CVE-2026-57271 8.3 HIGH GeoVision GeoWebPlayer Websocket Server out-of-bounds read vulnerability

IV. Related Vulnerabilities

Same product: GeoWebPlayer
Same vendor: GeoVision Inc.
Same weakness: CWE-120

V. Comments for CVE-2026-57276

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