How severe is CVE-2025-57052?

CVE-2025-57052 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-57052 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-57052?

CVE-2025-57052 affects Davegamble Cjson. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-57052?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-57052 have an EU (EUVD) identifier?

Yes. CVE-2025-57052 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26527.

When was CVE-2025-57052 published?

CVE-2025-57052 was published on 2025-09-03 and last updated on 2026-06-17.

CVE-2025-57052

CVE-2025-57052 is a critical-severity vulnerability in Davegamble Cjson with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-26527
Weakness: CWE-125
Affected product: Davegamble Cjson
Published: 2025-09-03
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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 and access restricted data via malformed JSON pointer strings containing alphanumeric characters.
How severe is CVE-2025-57052?: CVE-2025-57052 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-57052 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-57052?: CVE-2025-57052 affects Davegamble Cjson. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-57052?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-57052 have an EU (EUVD) identifier?: Yes. CVE-2025-57052 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26527.
When was CVE-2025-57052 published?: CVE-2025-57052 was published on 2025-09-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:davegamble:cjson:*:*:*:*:*:*:*:*

More vulnerabilities in Davegamble Cjson

CVE-2019-11835 — Critical (CVSS 9.8): cJSON before 1.7.11 allows out-of-bounds access, related to multiline comments.
CVE-2019-11834 — Critical (CVSS 9.8): cJSON before 1.7.11 allows out-of-bounds access, related to \x00 in a string literal.
CVE-2016-10749 — Critical (CVSS 9.8): parse_string in cJSON.c in cJSON before 2016-10-02 has a buffer over-read, as demonstrated by a string that begins with…
CVE-2018-1000217 — Critical (CVSS 9.8): Dave Gamble cJSON version 1.7.3 and earlier contains a CWE-416: Use After Free vulnerability in cJSON library that can…
CVE-2018-1000216 — High (CVSS 8.8): Dave Gamble cJSON version 1.7.2 and earlier contains a CWE-415: Double Free vulnerability in cJSON library that can…
CVE-2023-50472 — High (CVSS 7.5): cJSON v1.7.16 was discovered to contain a segmentation violation via the function cJSON_SetValuestring at cJSON.c.

All CVEs affecting Davegamble Cjson →

Other CWE-125 (Out-of-bounds Read) vulnerabilities

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CVE-2021-41556 — Critical (CVSS 10.0): sqclass.cpp in Squirrel through 2.2.5 and 3.x through 3.1 allows an out-of-bounds read (in the core interpreter) that…
CVE-2021-21777 — Critical (CVSS 10.0): An information disclosure vulnerability exists in the Ethernet/IP UDP handler functionality of EIP Stack Group OpENer…
CVE-2017-14451 — Critical (CVSS 10.0): An exploitable out-of-bounds read vulnerability exists in libevm (Ethereum Virtual Machine) of CPP-Ethereum. A…
CVE-2013-0767 — Critical (CVSS 10.0): The nsSVGPathElement::GetPathLengthScale function in Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and…

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