CVE-2025-57052

CRITICAL

davegamble/cjson 1.5.0-1.7.18 - Out-of-bounds Read via Malformed JSON Pointer Strings

Title source: llm

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.

References (2)

Core 2

Core References

Mailing List

https://lists.debian.org/debian-lts-announce/2025/09/msg00019.html

Exploit

https://x-0r.com/posts/cJSON-Array-Index-Parsing-Vulnerability

Scores

CVSS v3 9.8

EPSS 0.0067

EPSS Percentile 46.9%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact total

Details

CWE

CWE-125 CWE-129

Status published

Products (1)

davegamble/cjson 1.5.0 - 1.7.18

Published Sep 03, 2025

Tracked Since Feb 18, 2026