CVE-2025-3845CRITICAL 9.8EPSS p41.7%

CVE-2025-3845CVE-2025-3845

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.55% probability of exploitation · percentile 41.7% · 2026-06-19T12:03:05Z
Published2025-04-21
Last modified2025-10-15

Underlying weaknesses· 2

CWE-119CWE-120

References

  1. https://magnificent-dill-351.notion.site/Arbitrary-Memory-Writing-in-WebServer-1-0-1d1c693918ed80889711ebd44f7f9a31
  2. https://vuldb.com/?ctiid.305773
  3. https://vuldb.com/?id.305773
  4. https://vuldb.com/?submit.556273

2

TypeTargetConfidenceTier
WeaknessImproper Restriction of Operations within the Bounds of a Memory Buffercwe-1190%live
WeaknessBuffer Copy without Checking Size of Input ('Classic Buffer Overflow')cwe-1200%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
CVE-2025-3847
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CVE-2025-3846
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CVE-2025-4846
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CVE-2025-4845
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CVE-2025-2368
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CVE-2026-3544
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.