CVE-2018-8463
CVE-2018-8463 is a high-severity vulnerability in Microsoft Edge with a CVSS 3.x base score of 7.4. Its EPSS exploit-prediction score of 15% places it in the 96th percentile, indicating an elevated likelihood of exploitation.
Key facts
- Severity: High (CVSS 3.x base score 7.4)
- CVSS v2: 4.3
- EPSS exploit prediction: 15% (96th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Microsoft Edge
- Published:
- Last modified:
Description
An elevation of privilege vulnerability exists in Microsoft Edge that could allow an attacker to escape from the AppContainer sandbox in the browser, aka "Microsoft Edge Elevation of Privilege Vulnerability." This affects Microsoft Edge. This CVE ID is unique from CVE-2018-8469.
Frequently asked questions
- What is CVE-2018-8463?
- An elevation of privilege vulnerability exists in Microsoft Edge that could allow an attacker to escape from the AppContainer sandbox in the browser, aka "Microsoft Edge Elevation of Privilege Vulnerability." This affects Microsoft Edge. This CVE ID is unique from CVE-2018-8469.
- How severe is CVE-2018-8463?
- CVE-2018-8463 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
- Is CVE-2018-8463 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-8463?
- CVE-2018-8463 affects Microsoft Edge. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-8463?
- 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-2018-8463 published?
- CVE-2018-8463 was published on 2018-09-13 and last updated on 2026-06-17.
References
- http://www.securityfocus.com/bid/105260
- http://www.securitytracker.com/id/1041623
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8463
- https://www.exploit-db.com/exploits/45502/
Affected products (1)
- cpe:2.3:a:microsoft:edge:-:*:*:*:*:*:*:*
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