Buffer overflow in Microsoft Exchange Server
CVE-2018-8302
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.255 (97.9th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.255 · newest: 0.255 · change: 0.000
Affected products
- Microsoft Exchange Server — versions 2010, 2013, 2016
- Microsoft Exchange Server — versions 2010 Service Pack 3 Update Rollup 23, 2013 Cumulative Update 20, 2013 Cumulative Update 21
Weakness classification (CWE)
Public proof-of-concept exploits
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8302 (Patch, Vendor Advisory)
- www.securityfocus.com/bid/104973 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securitytracker.com/id/1041468 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2018-8302?
- CVE-2018-8302 is a critical-severity vulnerability in Microsoft Exchange Server, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2018-08-15.
- How severe is CVE-2018-8302?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2018-8302 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.