CVE-2018-0986
CVE-2018-0986 is a high-severity vulnerability in Microsoft Exchange Server with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 61% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-787.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 9.3
- EPSS exploit prediction: 61% (99th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Microsoft Exchange Server
- Published:
- Last modified:
Description
A remote code execution vulnerability exists when the Microsoft Malware Protection Engine does not properly scan a specially crafted file, leading to memory corruption, aka "Microsoft Malware Protection Engine Remote Code Execution Vulnerability." This affects Windows Defender, Windows Intune Endpoint Protection, Microsoft Security Essentials, Microsoft System Center Endpoint Protection, Microsoft Exchange Server, Microsoft System Center, Microsoft Forefront Endpoint Protection.
Frequently asked questions
- What is CVE-2018-0986?
- A remote code execution vulnerability exists when the Microsoft Malware Protection Engine does not properly scan a specially crafted file, leading to memory corruption, aka "Microsoft Malware Protection Engine Remote Code Execution Vulnerability." This affects Windows Defender, Windows Intune Endpoint Protection, Microsoft Security Essentials, Microsoft System Center Endpoint Protection, Microsoft Exchange Server, Microsoft System Center, Microsoft Forefront Endpoint Protection.
- How severe is CVE-2018-0986?
- CVE-2018-0986 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2018-0986 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 61% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-0986?
- CVE-2018-0986 primarily affects Microsoft Exchange Server. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2018-0986?
- 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-2018-0986 published?
- CVE-2018-0986 was published on 2018-04-04 and last updated on 2026-06-17.
References
- http://www.securityfocus.com/bid/103593
- http://www.securitytracker.com/id/1040631
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0986
- https://www.exploit-db.com/exploits/44402/
Affected products (9)
- cpe:2.3:a:microsoft:exchange_server:2013:-:*:*:*:*:*:*
- cpe:2.3:a:microsoft:exchange_server:2016:-:*:*:*:*:*:*
- cpe:2.3:a:microsoft:security_essentials:-:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:forefront_endpoint_protection_2010:-:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:intune_endpoint_protection:-:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:system_center_endpoint_protection:*:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:system_center_endpoint_protection:2012:-:*:*:*:*:*:*
- cpe:2.3:a:microsoft:system_center_endpoint_protection:2012:r2:*:*:*:*:*:*
- cpe:2.3:a:microsoft:windows_defender:-:*:*:*:*:*:*:*
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