CVE-2018-8246
An information disclosure vulnerability exists when Microsoft Excel improperly discloses the contents of its memory, aka "Microsoft Excel Information Disclosure Vulnerability." This affects Microsoft Excel Viewer, Microsoft Office, Microsoft Excel.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 18.6%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
Description
An information disclosure vulnerability exists when Microsoft Excel improperly discloses the contents of its memory, aka "Microsoft Excel Information Disclosure Vulnerability." This affects Microsoft Excel Viewer, Microsoft Office, Microsoft Excel.
- CVSS 3.0
- 5.5 MEDIUMCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- EPSS
- 18.61% probability · 97th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- microsoft/excel · microsoft/excel viewer · microsoft/office · microsoft/office compatibility pack
- Source
- secure@microsoft.com
EPSS moved from 9.7% on 21 September 2026 to 18.6% on 27 October 2026, peaking at 19.0% on 22 September 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://www.securityfocus.com/bid/104322Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041109Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8246Patch, Vendor Advisory
- http://www.securityfocus.com/bid/104322Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041109Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8246Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.