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CVE-2018-8302
A remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory,…
- 9.8CriticalCVSS base score
- 27.1%Exploitation in 30 daysEPSS · top 1.9% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory, aka "Microsoft Exchange Memory Corruption Vulnerability." This affects Microsoft Exchange Server.
Timeline
ID reserved
By microsoft
- 5 months later
· 5 months later
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Critical9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 27.1% · top 1.9% of all CVEs (9 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
Microsoft · Microsoft Exchange Server
- affected 2010 Service Pack 3 Update Rollup 23
- affected 2013 Cumulative Update 20
- affected 2013 Cumulative Update 21
- affected 2016 Cumulative Update 10
- affected 2016 Cumulative Update 9
References
3
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8302 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 104973 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 1041468 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2018-19955 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2018-8302)Record last updated .