HIGH KEV
Microsoft Office 2010, SharePoint Enterprise Server 2010, SharePoint Server 2010, Web Applications, Office Web Apps Server 2010 and 2013, Word Viewer, Word 2007, 2010, 2013 and 2016, Word Automation Services, and Office Online Server allow remote code execution when the software fails to properly handle objects in memory
Published Oct 13, 2017 ·Due Mar 24, 2022
7.8
HIGHCVSS 3.1
EPSS 81.16%
Description
Microsoft Office 2010, SharePoint Enterprise Server 2010, SharePoint Server 2010, Web Applications, Office Web Apps Server 2010 and 2013, Word Viewer, Word 2007, 2010, 2013 and 2016, Word Automation Services, and Office Online Server allow remote code execution when the software fails to properly handle objects in memory.
Affected products
-
- Version Microsoft Office 2010, SharePoint Enterprise Server 2010, SharePoint Server 2010, Web Applications, Office Web Apps Server 2010 and 2013, Word Viewer, Word 2007, 2010, 2013 and 2016, Word Automation Services, Office Online Server.StatusaffectedConstraints-
- 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 Corporation | Microsoft Office | n/a |
|
OR
- n/a
- 2016
- 2010
- 2013
- n/a
- 2016
- 2010
- 2013
- 2007
- 2010
- 2013
- 2013
- 2016
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.
7.8 HIGH NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
No CVSS v3.0 score for this CVE.
9.3 HIGH NVD
AV:N/AC:M/Au:N/C:C/I:C/A:C
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
Listed in CISA KEV KEV
Date Added
Mar 3, 2022
Patch Due
Mar 24, 2022
Required Action
Apply updates per vendor instructions.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
ActiveAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Feb 10, 2025 · SSVC 2.0.3
81.16% 0.81158
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.81158
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 (33 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 81.16% (0.81158) | 99.63th | v5 (v2026.06.15) |
| Jun 15, 2026 | 81.63% (0.81627) | 99.60th | v5 (v2026.06.15) |
| May 17, 2026 | 91.69% (0.91693) | 99.69th | v4 (v2025.03.14) |
| Mar 30, 2025 | 90.43% (0.90430) | 99.59th | v4 (v2025.03.14) |
| Mar 29, 2025 | 92.04% (0.92039) | 99.66th | v4 (v2025.03.14) |
| Mar 28, 2025 | 90.43% (0.90430) | 99.59th | v4 (v2025.03.14) |
| Mar 17, 2025 | 92.04% (0.92039) | 99.70th | v4 (v2025.03.14) |
| Dec 17, 2024 | 88.08% (0.88080) | 98.92th | v3 (v2023.03.01) |
| Dec 12, 2024 | 94.95% (0.94954) | 99.39th | v3 (v2023.03.01) |
| Oct 25, 2024 | 94.84% (0.94839) | 99.34th | v3 (v2023.03.01) |
| Aug 13, 2024 | 95.84% (0.95845) | 99.49th | v3 (v2023.03.01) |
| Aug 10, 2024 | 92.51% (0.92511) | 99.04th | v3 (v2023.03.01) |
| Jul 17, 2024 | 95.84% (0.95845) | 99.48th | v3 (v2023.03.01) |
| Jun 22, 2024 | 95.52% (0.95521) | 99.41th | v3 (v2023.03.01) |
| May 13, 2024 | 94.88% (0.94884) | 99.27th | v3 (v2023.03.01) |
| Apr 5, 2024 | 95.03% (0.95030) | 99.27th | v3 (v2023.03.01) |
| Feb 25, 2024 | 95.29% (0.95289) | 99.28th | v3 (v2023.03.01) |
| Jan 17, 2024 | 94.79% (0.94787) | 99.10th | v3 (v2023.03.01) |
| Oct 29, 2023 | 95.14% (0.95139) | 99.09th | v3 (v2023.03.01) |
| Sep 23, 2023 | 95.18% (0.95176) | 99.07th | v3 (v2023.03.01) |
| Aug 23, 2023 | 95.86% (0.95861) | 99.20th | v3 (v2023.03.01) |
| Jul 29, 2023 | 96.51% (0.96510) | 99.39th | v3 (v2023.03.01) |
| Jun 29, 2023 | 96.72% (0.96720) | 99.46th | v3 (v2023.03.01) |
| Jun 2, 2023 | 97.11% (0.97110) | 99.64th | v3 (v2023.03.01) |
| May 9, 2023 | 97.24% (0.97241) | 99.72th | v3 (v2023.03.01) |
| Mar 27, 2023 | 97.25% (0.97252) | 99.69th | v3 (v2023.03.01) |
| Mar 7, 2023 | 97.32% (0.97324) | 99.76th | v3 (v2023.03.01) |
| Mar 6, 2023 | 64.41% (0.64405) | 99.02th | v2 (v2022.01.01) |
| Jul 10, 2022 | 64.41% (0.64405) | 98.95th | v2 (v2022.01.01) |
| Feb 4, 2022 | 62.88% (0.62881) | 98.73th | v2 (v2022.01.01) |
| Feb 3, 2022 | 64.07% (0.64071) | 99.33th | v1 |
| Sep 1, 2021 | 64.07% (0.64071) | 99.81th | v1 |
| Apr 14, 2021 | 64.07% (0.64071) | 0.00th | v1 |
Weaknesses (1)
References (7)
- http://www.securityfocus.com/bid/101219 vdb-entryx_refsource_BIDBroken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039541 vdb-entryx_refsource_SECTRACKBroken LinkThird Party AdvisoryVDB Entry
- https://0patch.blogspot.com/2017/11/0patching-pretty-nasty-microsoft-word.html x_refsource_MISCExploit
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11826 x_refsource_CONFIRMPatchVendor Advisory
- https://securingtomorrow.mcafee.com/mcafee-labs/analyzing-microsoft-office-zero-day-exploit-cve-2017-11826-memory-corruption-vulnerability/ x_refsource_MISCBroken LinkTechnical DescriptionThird Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-11826 government-resourceUS Government Resource
- https://www.tarlogic.com/en/blog/exploiting-word-cve-2017-11826/ x_refsource_MISCExploitThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/101219 | vdb-entryx_refsource_BIDBroken LinkThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1039541 | vdb-entryx_refsource_SECTRACKBroken LinkThird Party AdvisoryVDB Entry | |
| https://0patch.blogspot.com/2017/11/0patching-pretty-nasty-microsoft-word.html | x_refsource_MISCExploit | |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11826 | x_refsource_CONFIRMPatchVendor Advisory | |
| https://securingtomorrow.mcafee.com/mcafee-labs/analyzing-microsoft-office-zero-day-exploit-cve-2017-11826-memory-corruption-vulnerability/ | x_refsource_MISCBroken LinkTechnical DescriptionThird Party Advisory | |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-11826 | government-resourceUS Government Resource | |
| https://www.tarlogic.com/en/blog/exploiting-word-cve-2017-11826/ | x_refsource_MISCExploitThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner microsoft
Published Oct 13, 2017
Updated Oct 21, 2025
Reserved Jul 31, 2017
Link CVE-2017-11826
CISA Vulnrichment
Updated Feb 10, 2025