CVE-2025-12240CRITICAL 9.8EPSS p47.9%

CVE-2025-12240CVE-2025-12240

Description

A security vulnerability has been detected in TOTOLINK A3300R 17.0.0cu.557_B20221024. This affects the function setDmzCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ip leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly 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
EPSS0.69% probability of exploitation · percentile 47.9% · 2026-06-18T12:00:27Z
Published2025-10-27
Last modified2025-10-27

Underlying weaknesses· 2

CWE-119CWE-120

References

  1. https://github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setDmzCfg.md
  2. https://vuldb.com/?ctiid.329910
  3. https://vuldb.com/?id.329910
  4. https://vuldb.com/?submit.673722
  5. https://www.totolink.net/

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.

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CVE-2025-12239
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CVE-2025-12260
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CVE-2025-12241
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CVE-2025-12259
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.