Critical severity · published Sep 3, 2025
CVE-2025-57052
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…
9.8
CVSS
0.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 55% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CJ
Cjson · Davegamble
1.5.0 through 1.7.18 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-57052
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-57052
Exploit
https://x-0r.com/posts/cJSON-Array-Index-Parsing-Vulnerability
lists.debian.org
https://lists.debian.org/debian-lts-announce/2025/09/msg00019.html
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