CVE-2025-57052CRITICAL 9.8EPSS p47.0%

CVE-2025-57052CVE-2025-57052

Description

cJSON 1.5.0 through 1.7.18 allows out-of-bounds access via the decode_array_index_from_pointer function in cJSON_Utils.c, allowing remote attackers to bypass array bounds checking and access restricted data via malformed JSON pointer strings containing alphanumeric characters.

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
EPSS0.67% probability of exploitation · percentile 47.0% · 2026-06-19T12:03:05Z
Published2025-09-03
Last modified2025-11-03

Underlying weaknesses· 2

CWE-125CWE-129

References

  1. https://x-0r.com/posts/cJSON-Array-Index-Parsing-Vulnerability
  2. https://lists.debian.org/debian-lts-announce/2025/09/msg00019.html

2

TypeTargetConfidenceTier
WeaknessOut-of-bounds Readcwe-1250%live
WeaknessImproper Validation of Array Indexcwe-1290%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.