CVE-2018-8126
CVE-2018-8126 is a high-severity vulnerability in Microsoft Internet Explorer with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 6.8
- EPSS exploit prediction: 5% (92nd percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Microsoft Internet Explorer
- Published:
- Last modified:
Description
A security feature bypass vulnerability exists when Internet Explorer fails to validate User Mode Code Integrity (UMCI) policies, aka "Internet Explorer Security Feature Bypass Vulnerability." This affects Internet Explorer 11.
Frequently asked questions
- What is CVE-2018-8126?
- A security feature bypass vulnerability exists when Internet Explorer fails to validate User Mode Code Integrity (UMCI) policies, aka "Internet Explorer Security Feature Bypass Vulnerability." This affects Internet Explorer 11.
- How severe is CVE-2018-8126?
- CVE-2018-8126 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-2018-8126 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-8126?
- CVE-2018-8126 affects Microsoft Internet Explorer. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-8126?
- 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-2018-8126 published?
- CVE-2018-8126 was published on 2018-05-09 and last updated on 2026-06-17.
References
- http://www.securityfocus.com/bid/103997
- http://www.securitytracker.com/id/1040846
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8126
Affected products (1)
- cpe:2.3:a:microsoft:internet_explorer:11:*:*:*:*:*:*:*
More vulnerabilities in Microsoft Internet Explorer
- CVE-2014-1764 — Critical (CVSS 10.0): Microsoft Internet Explorer 7 through 11 allows remote attackers to execute arbitrary code and bypass a sandbox…
- CVE-2014-1763 — Critical (CVSS 10.0): Use-after-free vulnerability in Microsoft Internet Explorer 9 through 11 allows remote attackers to execute arbitrary…
- CVE-2010-1118 — Critical (CVSS 10.0): Unspecified vulnerability in Internet Explorer 8 on Microsoft Windows 7 allows remote attackers to execute arbitrary…
- CVE-2009-1918 — Critical (CVSS 10.0): Microsoft Internet Explorer 5.01 SP4 and 6 SP1; Internet Explorer 6 for Windows XP SP2 and SP3 and Server 2003 SP2; and…
- CVE-2009-1043 — Critical (CVSS 10.0): Unspecified vulnerability in Microsoft Internet Explorer 8 on Windows 7 allows remote attackers to execute arbitrary…
- CVE-2007-3341 — Critical (CVSS 10.0): Unspecified vulnerability in the FTP implementation in Microsoft Internet Explorer allows remote attackers to "see a…