Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2025-3845— markparticle WebServer buffer.cpp HasWritten buffer overflow

Quick assessment

Affected
markparticle WebServer
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.

WebServer是MARK个人开发者的一个C++ Linux WebServer服务器。 WebServer 1.0版本存在安全漏洞，该漏洞源于文件code/buffer/buffer.cpp中Buffer::HasWritten函数对writePos_参数的操作导致缓冲区溢出。

CVSS 7.3 · High EPSS 0.66% · P49
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2025-3845

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
markparticle WebServer buffer.cpp HasWritten buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in markparticle WebServer up to 1.0. It has been declared as critical. Affected by this vulnerability is the function Buffer::HasWritten of the file code/buffer/buffer.cpp. The manipulation of the argument writePos_ leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
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
WebServer 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WebServer是MARK个人开发者的一个C++ Linux WebServer服务器。 WebServer 1.0版本存在安全漏洞，该漏洞源于文件code/buffer/buffer.cpp中Buffer::HasWritten函数对writePos_参数的操作导致缓冲区溢出。
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
markparticle WebServer 1.0 -

II. Public POCs for CVE-2025-3845

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2025-3845

请登录查看更多情报信息。

Vendor Advisories for CVE-2025-3845 (2)

Security Blog Posts for CVE-2025-3845 (1)

Same Patch Batch · markparticle · 2025-04-21 · 3 CVEs total

CVE-2025-3846 7.3 HIGH markparticle WebServer Registration httprequest.cpp sql injection
CVE-2025-3847 7.3 HIGH markparticle WebServer Login httprequest.cpp sql injection

IV. Related Vulnerabilities

Same product: WebServer
Same vendor: markparticle
Same weakness: CWE-120

V. Comments for CVE-2025-3845

No comments yet

Leave a comment