CVE-2016-4303

Status: ModifiedCritical (9.8)—

The parse_string function in cjson.c in the cJSON library mishandles UTF8/16 strings, which allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a non-hex character in a JSON string, which triggers a heap-based buffer overflow.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base score: 9.8

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 6.96%
Percentile among all scored CVEs: 94
Score date: 9/30/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (5)

Debian — Debian Linux ES — Iperf3 Novell — Suse Package HUB FOR Suse Linux Enterprise Opensuse — Leap Opensuse — Opensuse

CWEs

CWE-120

References

Raw JSON (NVD)

Show

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