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
Published Sep 26, 2016
9.8
CRITICALCVSS 3.1
EPSS 6.96%
Description
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.
Affected products
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.96% (0.06963) | 93.93th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.83% (0.06833) | 93.17th | v5 (v2026.06.15) |
| May 28, 2026 | 7.58% (0.07577) | 91.95th | v4 (v2025.03.14) |
| Mar 30, 2025 | 5.76% (0.05758) | 89.53th | v4 (v2025.03.14) |
| Mar 29, 2025 | 9.79% (0.09788) | 88.17th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.76% (0.05758) | 89.79th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.72% (0.01719) | 88.32th | v3 (v2023.03.01) |
| Jun 13, 2024 | 1.72% (0.01719) | 87.88th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.72% (0.01719) | 85.87th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.84% (0.04845) | 89.33th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.84% (0.04845) | 88.29th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.84% (0.04845) | 74.71th | v2 (v2022.01.01) |
References (8)
- http://blog.talosintel.com/2016/06/esnet-vulnerability.html x_refsource_MISCExploitThird Party Advisory
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00082.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00090.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://software.es.net/iperf/news.html#security-issue-iperf-3-1-3-iperf-3-0-12-released x_refsource_CONFIRMRelease NotesThird Party Advisory
- http://www.talosintelligence.com/reports/TALOS-2016-0164/ x_refsource_MISCExploitThird Party Advisory
- https://github.com/esnet/iperf/commit/91f2fa59e8ed80dfbf400add0164ee0e508e412a x_refsource_CONFIRMPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/01/msg00023.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://raw.githubusercontent.com/esnet/security/master/cve-2016-4303/esnet-secadv-2016-0001.txt.asc x_refsource_CONFIRMThird Party Advisory
Change history (0)
No recorded changes yet.