CVE-2018-6319
CVE-2018-6319 is a medium-severity vulnerability in Sophos Sophos Tester with a CVSS 3.x base score of 5.5. 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-476.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- CVSS v2: 4.9
- EPSS exploit prediction: 0% (24th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-476
- Affected product: Sophos Sophos Tester
- Published:
- Last modified:
Description
In Sophos Tester Tool 3.2.0.7 Beta, the driver accepts a special DeviceIoControl code that doesn't check its argument. This argument is a memory address: if a caller passes a NULL pointer or a random invalid address, the driver will cause a Blue Screen of Death. If a program or malware does this at boot time, it can cause a persistent denial of service on the machine.
Frequently asked questions
- What is CVE-2018-6319?
- In Sophos Tester Tool 3.2.0.7 Beta, the driver accepts a special DeviceIoControl code that doesn't check its argument. This argument is a memory address: if a caller passes a NULL pointer or a random invalid address, the driver will cause a Blue Screen of Death. If a program or malware does this at boot time, it can cause a persistent denial of service on the machine.
- How severe is CVE-2018-6319?
- CVE-2018-6319 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2018-6319 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-6319?
- CVE-2018-6319 affects Sophos Sophos Tester. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-6319?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2018-6319 published?
- CVE-2018-6319 was published on 2018-02-02 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:sophos:sophos_tester:3.2.0.7:beta:*:*:*:*:*:*
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