How severe is CVE-2018-16723?

CVE-2018-16723 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-16723 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-16723?

CVE-2018-16723 affects V-secure Jingyun Antivirus. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-16723?

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

When was CVE-2018-16723 published?

CVE-2018-16723 was published on 2020-11-23 and last updated on 2026-06-17.

CVE-2018-16723

CVE-2018-16723 is a high-severity vulnerability in V-secure Jingyun Antivirus with a CVSS 3.x base score of 7.8. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: V-secure Jingyun Antivirus
Published: 2020-11-23
Last modified: 2026-06-17

Description

In Jingyun Antivirus v2.4.2.39, the driver file (ZySandbox.sys) allows local users to cause a denial of service (BSOD) or possibly have unspecified other impact because of not validating input values from IOCtl 0x12364020.

Frequently asked questions

What is CVE-2018-16723?: In Jingyun Antivirus v2.4.2.39, the driver file (ZySandbox.sys) allows local users to cause a denial of service (BSOD) or possibly have unspecified other impact because of not validating input values from IOCtl 0x12364020.
How severe is CVE-2018-16723?: CVE-2018-16723 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-16723 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-16723?: CVE-2018-16723 affects V-secure Jingyun Antivirus. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-16723?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-16723 published?: CVE-2018-16723 was published on 2020-11-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:v-secure:jingyun_antivirus:2.4.2.39:*:*:*:*:*:*:*

More vulnerabilities in V-secure Jingyun Antivirus

CVE-2018-16722 — High (CVSS 7.8): In Jingyun Antivirus v2.4.2.39, the driver file (ZySandbox.sys) allows local users to cause a denial of service (BSOD)…
CVE-2018-16721 — High (CVSS 7.8): In Jingyun Antivirus v2.4.2.39, the driver file (ZySandbox.sys) allows local users to cause a denial of service (BSOD)…
CVE-2018-16720 — High (CVSS 7.8): In Jingyun Antivirus v2.4.2.39, the driver file (ZySandbox.sys) allows local users to cause a denial of service (BSOD)…
CVE-2018-16719 — High (CVSS 7.8): In Jingyun Antivirus v2.4.2.39, the driver file (hookbody.sys) allows local users to cause a denial of service (BSOD)…

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