MEDIUM
An information disclosure vulnerability exists when Microsoft Office software reads out of bound memory due to an uninitialized variable, which could disclose the contents of memory, aka "Microsoft Office Information Disclosure Vulnerability." This affects Word, Microsoft SharePoint Server, Microsoft Office Word Viewer, Microsoft Excel Viewer, Microsoft SharePoint, Microsoft Office
Published Aug 15, 2018
5.5
MEDIUMCVSS 3.0
EPSS 8.25%
Description
An information disclosure vulnerability exists when Microsoft Office software reads out of bound memory due to an uninitialized variable, which could disclose the contents of memory, aka "Microsoft Office Information Disclosure Vulnerability." This affects Word, Microsoft SharePoint Server, Microsoft Office Word Viewer, Microsoft Excel Viewer, Microsoft SharePoint, Microsoft Office.
Affected products
-
- Version 2007 Service Pack 3StatusaffectedConstraints-
- Version
-
- Version 2010 Service Pack 2 (32-bit editions)StatusaffectedConstraints-
- Version 2010 Service Pack 2 (64-bit editions)StatusaffectedConstraints-
- Version 2013 RT Service Pack 1StatusaffectedConstraints-
- Version 2013 Service Pack 1 (32-bit editions)StatusaffectedConstraints-
- Version 2013 Service Pack 1 (64-bit editions)StatusaffectedConstraints-
- Version 2016 (32-bit edition)StatusaffectedConstraints-
- Version 2016 (64-bit edition)StatusaffectedConstraints-
- Version 2016 Click-to-Run (C2R) for 32-bit editionsStatusaffectedConstraints-
- Version 2016 Click-to-Run (C2R) for 64-bit editionsStatusaffectedConstraints-
- Version Web Apps 2010 Service Pack 2StatusaffectedConstraints-
- Version Web Apps 2013 Service Pack 1StatusaffectedConstraints-
- Version
-
- Version Microsoft Office Word ViewerStatusaffectedConstraints-
- Version
-
- Version Enterprise Server 2013 Service Pack 1StatusaffectedConstraints-
- Version Enterprise Server 2016StatusaffectedConstraints-
- Version
-
- Version 2013 Service Pack 1StatusaffectedConstraints-
- Version
-
- Version Automation Services on Microsoft SharePoint Server 2010 Service Pack 2StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Microsoft | Microsoft Excel Viewer | n/a |
| ||||||||||||||||||||||||||||||||||||
| Microsoft | Microsoft Office | n/a |
| ||||||||||||||||||||||||||||||||||||
| Microsoft | Microsoft Office Word Viewer | n/a |
| ||||||||||||||||||||||||||||||||||||
| Microsoft | Microsoft SharePoint | n/a |
| ||||||||||||||||||||||||||||||||||||
| Microsoft | Microsoft SharePoint Server | n/a |
| ||||||||||||||||||||||||||||||||||||
| Microsoft | Word | n/a |
|
Configuration 1
OR
- 2007
- 2010
- 2013
- 2013
- 2016
- 2016
- n/a
- 2010
- 2013
- n/a
- n/a
- n/a
- 2013
Configuration 2
AND
- n/a
Running on/with
- 2010
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
5.5 MEDIUM NVD
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact High
Integrity Impact None
Availability Impact None
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
8.25% 0.08247
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.08247
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (37 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 8.25% (0.08247) | 94.74th | v5 (v2026.06.15) |
| Sep 22, 2026 | 8.25% (0.08247) | 94.65th | v5 (v2026.06.15) |
| Sep 21, 2026 | 5.72% (0.05720) | 92.74th | v5 (v2026.06.15) |
| Sep 6, 2026 | 8.25% (0.08247) | 94.52th | v5 (v2026.06.15) |
| Sep 5, 2026 | 5.72% (0.05720) | 92.59th | v5 (v2026.06.15) |
| Aug 30, 2026 | 8.25% (0.08247) | 94.49th | v5 (v2026.06.15) |
| Aug 28, 2026 | 5.72% (0.05720) | 92.54th | v5 (v2026.06.15) |
| Aug 24, 2026 | 8.25% (0.08247) | 94.46th | v5 (v2026.06.15) |
| Aug 23, 2026 | 5.72% (0.05720) | 92.51th | v5 (v2026.06.15) |
| Jul 10, 2026 | 8.25% (0.08247) | 94.23th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.85% (0.06849) | 93.19th | v5 (v2026.06.15) |
| May 7, 2026 | 32.80% (0.32800) | 96.91th | v4 (v2025.03.14) |
| Jan 3, 2026 | 26.94% (0.26940) | 96.23th | v4 (v2025.03.14) |
| Dec 28, 2025 | 32.42% (0.32418) | 96.69th | v4 (v2025.03.14) |
| Dec 27, 2025 | 29.91% (0.29912) | 96.51th | v4 (v2025.03.14) |
| Dec 14, 2025 | 32.56% (0.32563) | 96.68th | v4 (v2025.03.14) |
| Dec 13, 2025 | 34.55% (0.34553) | 96.83th | v4 (v2025.03.14) |
| Dec 7, 2025 | 29.91% (0.29912) | 96.46th | v4 (v2025.03.14) |
| Oct 30, 2025 | 26.29% (0.26286) | 96.07th | v4 (v2025.03.14) |
| Mar 30, 2025 | 23.00% (0.23003) | 95.43th | v4 (v2025.03.14) |
| Mar 29, 2025 | 35.77% (0.35768) | 95.50th | v4 (v2025.03.14) |
| Mar 19, 2025 | 23.00% (0.23003) | 95.22th | v4 (v2025.03.14) |
| Mar 17, 2025 | 15.32% (0.15315) | 94.12th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.21% (0.00208) | 59.68th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.21% (0.00208) | 58.97th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.21% (0.00208) | 56.93th | v3 (v2023.03.01) |
| Mar 6, 2023 | 5.71% (0.05708) | 90.31th | v2 (v2022.01.01) |
| Dec 6, 2022 | 5.71% (0.05708) | 90.02th | v2 (v2022.01.01) |
| Jun 28, 2022 | 5.20% (0.05203) | 88.88th | v2 (v2022.01.01) |
| May 22, 2022 | 4.43% (0.04434) | 87.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.03% (0.04026) | 84.55th | v2 (v2022.01.01) |
| Feb 9, 2022 | 4.03% (0.04026) | 68.18th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.36% (0.03358) | 65.90th | v2 (v2022.01.01) |
| Feb 3, 2022 | 6.70% (0.06701) | 83.28th | v1 |
| Jan 6, 2022 | 6.70% (0.06701) | 83.12th | v1 |
| Sep 1, 2021 | 6.70% (0.06701) | 91.08th | v1 |
| Apr 14, 2021 | 6.70% (0.06701) | 0.00th | v1 |
Weaknesses (2)
References (2)
- http://www.securityfocus.com/bid/104996 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8378 x_refsource_CONFIRMPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/104996 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8378 | x_refsource_CONFIRMPatchVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner microsoft
Published Aug 15, 2018
Updated Aug 5, 2024
Reserved Mar 14, 2018
Link CVE-2018-8378
CISA Vulnrichment
Updated n/a