Vulnerability · Published Apr 21, 2025 · Assigned by VulDB
CVE-2025-3845markparticle WebServer buffer.cpp HasWritten buffer overflow
High 7.3
In plain English
A high-severity buffer overflow in WebServer from markparticle. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities).
Severity (CVSS 3.1)7.3High
Exploit odds (30 days)0.7%top 46.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| markparticle | WebServer | 1.0 |
Weakness: CWE-120, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
References
- VDB-305773 | markparticle WebServer buffer.cpp HasWritten buffer overflow vdb-entry, technical-description
- VDB-305773 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #556273 | markparticle WebServer 1.0 Arbitrary Memory Writing third-party-advisory
- https://magnificent-dill-351.notion.site/Arbitrary-Memory-Writing-in-WebServer-1-0-1d1c693918ed80889711ebd44f7f9a31 exploit