CVE-2018-3971
CVE-2018-3971 is a high-severity vulnerability in Sophos Hitmanpro.alert 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-123.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v2: 7.2
- EPSS exploit prediction: 1% (42nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-123
- Affected product: Sophos Hitmanpro.alert
- Published:
- Last modified:
Description
An exploitable arbitrary write vulnerability exists in the 0x2222CC IOCTL handler functionality of Sophos HitmanPro.Alert 3.7.6.744. A specially crafted IRP request can cause the driver to write data under controlled by an attacker address, resulting in memory corruption. An attacker can send IRP request to trigger this vulnerability.
Frequently asked questions
- What is CVE-2018-3971?
- An exploitable arbitrary write vulnerability exists in the 0x2222CC IOCTL handler functionality of Sophos HitmanPro.Alert 3.7.6.744. A specially crafted IRP request can cause the driver to write data under controlled by an attacker address, resulting in memory corruption. An attacker can send IRP request to trigger this vulnerability.
- How severe is CVE-2018-3971?
- CVE-2018-3971 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-2018-3971 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-3971?
- CVE-2018-3971 affects Sophos Hitmanpro.alert. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-3971?
- 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-2018-3971 published?
- CVE-2018-3971 was published on 2018-10-25 and last updated on 2026-06-17.
References
- http://www.securityfocus.com/bid/105743
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0636
Affected products (1)
- cpe:2.3:a:sophos:hitmanpro.alert:3.7.6.744:*:*:*:*:*:*:*
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