How severe is CVE-2018-6775?

CVE-2018-6775 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-2018-6775 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-6775?

CVE-2018-6775 affects Jiangmin Antivirus. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-6775?

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-2018-6775 published?

CVE-2018-6775 was published on 2018-02-06 and last updated on 2026-06-17.

CVE-2018-6775

CVE-2018-6775 is a high-severity vulnerability in Jiangmin 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: 6.1
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Jiangmin Antivirus
Published: 2018-02-06
Last modified: 2026-06-17

Description

In Jiangmin Antivirus 16.0.0.100, the driver file (KrnlCall.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 0x990081C8.

Frequently asked questions

What is CVE-2018-6775?: In Jiangmin Antivirus 16.0.0.100, the driver file (KrnlCall.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 0x990081C8.
How severe is CVE-2018-6775?: CVE-2018-6775 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-2018-6775 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-6775?: CVE-2018-6775 affects Jiangmin Antivirus. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-6775?: 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-2018-6775 published?: CVE-2018-6775 was published on 2018-02-06 and last updated on 2026-06-17.

References

https://github.com/ZhiyuanWang-Chengdu-Qihoo360/Jiangmin_Antivirus_POC/tree/master/KrnlCall_990081C8

Affected products (1)

cpe:2.3:a:jiangmin:antivirus:16.0.0.100:*:*:*:*:*:*:*

More vulnerabilities in Jiangmin Antivirus

CVE-2018-6788 — High (CVSS 7.8): In Jiangmin Antivirus 16.0.0.100, the driver file (KVFG.sys) allows local users to cause a denial of service (BSOD) or…
CVE-2018-6787 — High (CVSS 7.8): In Jiangmin Antivirus 16.0.0.100, the driver file (KVFG.sys) allows local users to cause a denial of service (BSOD) or…
CVE-2018-6786 — High (CVSS 7.8): In Jiangmin Antivirus 16.0.0.100, the driver file (KVFG.sys) allows local users to cause a denial of service (BSOD) or…
CVE-2018-6785 — High (CVSS 7.8): In Jiangmin Antivirus 16.0.0.100, the driver file (KSysCall.sys) allows local users to cause a denial of service (BSOD)…
CVE-2018-6784 — High (CVSS 7.8): In Jiangmin Antivirus 16.0.0.100, the driver file (KSysCall.sys) allows local users to cause a denial of service (BSOD)…
CVE-2018-6783 — High (CVSS 7.8): In Jiangmin Antivirus 16.0.0.100, the driver file (KSysCall.sys) allows local users to cause a denial of service (BSOD)…

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