CVE-2018-0922 [High] | Out-of-bounds Write in Office

Microsoft Office 2010 SP2, 2013 SP1, and 2016, Microsoft Office 2016 Click-to-Run Microsoft Office 2016 for Mac, Microsoft Office Compatibility Pack SP2, Microsoft Office Web Apps 2010 SP2, Microsoft Office Web Apps 2013 SP1, Microsoft Office Word Viewer, Microsoft SharePoint Enterprise Server 2013 SP1, Microsoft SharePoint Enterprise Server 2016, Microsoft Office Compatibility Pack SP2, Microsoft Online Server 2016, Microsoft SharePoint Server 2010 SP2, Microsoft Word 2007 SP3, Microsoft Word 2010 SP2, Word 2013 and Microsoft Word 2016 allow a remote code execution vulnerability due to how objects are handled in memory, aka "Microsoft Office Memory Corruption Vulnerability".

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	32.51%	17.62%	-14.89%
2	2025-12-28	23.88%	32.51%	+8.63%
3	2025-12-27	—	23.88%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

32.51%

17.62%

-14.89%

2025-12-28

23.88%

32.51%

+8.63%

2025-12-27

—

23.88%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.8	3.0	HIGH	`CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:R) A real person has to do something—click, install, enable—otherwise it doesn’t land. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.8	5.9	[email protected]
9.3	2.0	HIGH	`AV:N/AC:M/Au:N/C:C/I:C/A:C` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:M) Exploitation needs some favorable conditions, but not exceptional ones. Authentication (AU:N) No authentication is required. Confidentiality impact (C:C) Complete confidentiality impact. Integrity impact (I:C) Complete integrity impact. Availability impact (A:C) Complete availability impact.	8.6	10.0	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.8

3.0

HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R): A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.8

5.9

[email protected]

9.3

2.0

HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:C Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:M): Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:C): Complete confidentiality impact.
Integrity impact (I:C): Complete integrity impact.
Availability impact (A:C): Complete availability impact.

8.6

10.0

[email protected]

Affected software / configurations for CVE-2018-0922

Vendor	Product	Version	Raw CPE
microsoft	office	2010	cpe:2.3:a:microsoft:office:2010:sp2::::::
microsoft	office	2013	cpe:2.3:a:microsoft:office:2013:sp1::::::
microsoft	office	2016	cpe:2.3:a:microsoft:office:2016:::::::*
microsoft	office	2016	cpe:2.3:a:microsoft:office:2016:::::mac::
microsoft	office	2016	cpe:2.3:a:microsoft:office:2016::::click-to-run:::
microsoft	office_compatibility_pack	—	cpe:2.3:a:microsoft:office_compatibility_pack:-:sp2::::::
microsoft	office_online_server	2016	cpe:2.3:a:microsoft:office_online_server:2016:::::::*
microsoft	office_web_apps	2010	cpe:2.3:a:microsoft:office_web_apps:2010:sp2::::::
microsoft	office_web_apps	2013	cpe:2.3:a:microsoft:office_web_apps:2013:sp1::::::
microsoft	office_word_viewer	—	cpe:2.3:a:microsoft:office_word_viewer:-:::::::*
microsoft	sharepoint_enterprise_server	2013	cpe:2.3:a:microsoft:sharepoint_enterprise_server:2013:sp1::::::
microsoft	sharepoint_enterprise_server	2016	cpe:2.3:a:microsoft:sharepoint_enterprise_server:2016:::::::*
microsoft	sharepoint_server	2010	cpe:2.3:a:microsoft:sharepoint_server:2010:sp2::::::
microsoft	word	2007	cpe:2.3:a:microsoft:word:2007:sp3::::::
microsoft	word	2010	cpe:2.3:a:microsoft:word:2010:sp2::::::
microsoft	word	2013	cpe:2.3:a:microsoft:word:2013:::::::*
microsoft	word	2016	cpe:2.3:a:microsoft:word:2016:::::::*

References for CVE-2018-0922

URL	Tags
http://www.securityfocus.com/bid/103314	Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040511	Third Party Advisory VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0922	Patch Vendor Advisory

URL

CVE-2018-0922

Exploit prediction scoring system (EPSS) score for CVE-2018-0922

Common vulnerability scoring system (CVSS) metrics for CVE-2018-0922

Weakness enumeration for CVE-2018-0922

Affected software / configurations for CVE-2018-0922

References for CVE-2018-0922