CVE-2018-8403
A remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory, aka "Microsoft Browser Memory Corruption Vulnerability." This affects Internet Explorer 11, Microsoft Edge, Internet Explorer 10.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 13.4%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
Description
A remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory, aka "Microsoft Browser Memory Corruption Vulnerability." This affects Internet Explorer 11, Microsoft Edge, Internet Explorer 10.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 13.37% probability · 96th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- microsoft/internet explorer · microsoft/edge
- Source
- secure@microsoft.com
EPSS 13.4% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/105033Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041457Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8403Patch, Vendor Advisory
- http://www.securityfocus.com/bid/105033Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041457Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8403Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.