What is CVE-2024-31755?

CVE-2024-31755 is a high-severity vulnerability in Cjson Project, classified under NULL Pointer Dereference. CVSS score: 7.6/10. Published 2024-04-26.

How severe is CVE-2024-31755?

High severity. CVSS v3 base score is 7.6 out of 10.

Is CVE-2024-31755 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

NULL pointer dereference in Cjson Project

CVE-2024-31755

cJSON v1.7.17 was discovered to contain a segmentation violation, which can trigger through the second parameter of function cJSON_SetValuestring at cJSON.c.

Published 2024-04-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H.

EPSS exploit prediction

EPSS: 0.006 (49.1th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Cjson Project — versions 1.7.17

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

github.com/DaveGamble/cJSON/issues/839 (Exploit, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2024-31755?: CVE-2024-31755 is a high-severity vulnerability in Cjson Project, classified under NULL Pointer Dereference. CVSS score: 7.6/10. Published 2024-04-26.
How severe is CVE-2024-31755?: High severity. CVSS v3 base score is 7.6 out of 10.
Is CVE-2024-31755 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.