How severe is CVE-2016-4425?

CVE-2016-4425 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2016-4425 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-4425?

CVE-2016-4425 affects Jansson Project Jansson. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-4425?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2016-4425 published?

CVE-2016-4425 was published on 2016-05-17 and last updated on 2026-06-17.

CVE-2016-4425

CVE-2016-4425 is a medium-severity vulnerability in Jansson Project Jansson with a CVSS 3.x base score of 6.5. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Jansson Project Jansson
Published: 2016-05-17
Last modified: 2026-06-17

Description

Jansson 2.7 and earlier allows context-dependent attackers to cause a denial of service (deep recursion, stack consumption, and crash) via crafted JSON data.

Frequently asked questions

What is CVE-2016-4425?: Jansson 2.7 and earlier allows context-dependent attackers to cause a denial of service (deep recursion, stack consumption, and crash) via crafted JSON data.
How severe is CVE-2016-4425?: CVE-2016-4425 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2016-4425 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-4425?: CVE-2016-4425 affects Jansson Project Jansson. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-4425?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-4425 published?: CVE-2016-4425 was published on 2016-05-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jansson_project:jansson:*:*:*:*:*:*:*:*

More vulnerabilities in Jansson Project Jansson

CVE-2020-36325 — High (CVSS 7.5): An issue was discovered in Jansson through 2.13.1. Due to a parsing error in json_loads, there's an out-of-bounds…
CVE-2013-6401 — Medium (CVSS 5.0): Jansson, possibly 2.4 and earlier, does not restrict the ability to trigger hash collisions predictably, which allows…

All CVEs affecting Jansson Project Jansson →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →