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CVE-2025-57052

Good to know:

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Date: September 2, 2025

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.

Severity Score

Related Resources (4)

https://x-0r.com/posts/cJSON-Array-Index-Parsing-Vulnerability
https://nvd.nist.gov/vuln/detail/CVE-2025-57052
https://security-tracker.debian.org/tracker/CVE-2025-57052
https://www.mend.io/vulnerability-database/CVE-2025-57052

Severity Score

Weakness Type (CWE)

Improper Validation of Array Index

CWE-129

Out-of-bounds Read

CWE-125

Top Fix

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Upgrade Version

Upgrade to version cjson - null

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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