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CVE-2020-1449

21
FAUCET Score

CVE-2020-1449 is a remote code execution vulnerability in Microsoft Project software, affecting Microsoft 365 Apps and Microsoft Office, stemming from insufficient validation of file source markup. This vulnerability carries a high CVSS score of 7.8, indicating a significant risk where a user interaction (e.g., opening a malicious file) can lead to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation in the wild (not in KEV), and no public exploit code is available, the vulnerability has garnered notable community discussion and media coverage, suggesting awareness within the security community.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:*
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2010:sp2:*:*:*:*:x64:*
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2010:sp2:*:*:*:*:x86:*
2013CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2013:sp1:*:*:*:*:x64:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.58%
Probability of exploitation in next 30 days
EPSS Percentile
90.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0459 is in the 91st percentile among its peer group of 11,617 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (11)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Microsoft Office 2019 for 32-bit editionsFixed in: https://aka.ms/OfficeSecurityReleases
microsoftpatch availablevia msrc
Product: Microsoft Office 2019 for 64-bit editionsFixed in: https://aka.ms/OfficeSecurityReleases
microsoftpatch availablevia msrc
Product: Microsoft 365 Apps for Enterprise for 32-bit SystemsFixed in: https://aka.ms/OfficeSecurityReleases
microsoftpatch availablevia msrc
Product: Microsoft 365 Apps for Enterprise for 64-bit SystemsFixed in: https://aka.ms/OfficeSecurityReleases
microsoftpatch availablevia msrc
Product: Microsoft Project 2013 Service Pack 1 (32-bit editions)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Project 2013 Service Pack 1 (64-bit editions)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Project 2016 (32-bit edition)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Project 2016 (64-bit edition)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Project 2010 Service Pack 2 (32-bit editions)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Project 2010 Service Pack 2 (64-bit editions)
View patch

Vendor Advisories (1)

microsoft2020-Jul/CVE-2020-1449Important

Microsoft Project Remote Code Execution Vulnerability

Jul 14, 2020

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2020-1449
PatchVendor Advisory