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CVE-2017-11877

22
FAUCET Score

CVE-2017-11877 is a security feature bypass vulnerability affecting multiple versions of Microsoft Excel, Excel Viewer, and Office Compatibility Pack. It allows an attacker to bypass macro security settings within an Excel document, potentially enabling malicious code execution. The vulnerability has a medium CVSS score of 5.5, indicating a low attack complexity but requiring user interaction (e.g., opening a malicious document) to achieve a high impact on integrity. While not actively exploited in the wild and lacking public exploit code, it has received some community discussion and media coverage, suggesting awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
2007CPE matchmatch criteria
cpe:2.3:a:microsoft:excel:2007:*:*:*:*:*:*:*
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:excel:2010:*:*:*:*:*:*:*
2013CPE matchmatch criteria
cpe:2.3:a:microsoft:excel:2013:*:*:*:*:*:*:*
2013CPE matchmatch criteria
cpe:2.3:a:microsoft:excel:2013:sp1:*:*:*:*:*:*
2016CPE matchmatch criteria
cpe:2.3:a:microsoft:excel:2016:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.55%
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 0.0455 is in the 97th percentile among its peer group of 5,765 CVEs.

Social Chatter

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

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (12)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Microsoft Excel 2016 (32-bit edition)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Excel 2016 (64-bit edition)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Excel 2007 Service Pack 3
View patch
microsoftpatch availablevia msrc
Product: Microsoft Excel 2010 Service Pack 2 (32-bit editions)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Excel 2010 Service Pack 2 (64-bit editions)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Excel 2013 RT Service Pack 1
microsoftpatch availablevia msrc
Product: Microsoft Excel 2013 Service Pack 1 (32-bit editions)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Excel 2013 Service Pack 1 (64-bit editions)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Excel 2016 for Mac
View patch
microsoftpatch availablevia msrc
Product: Microsoft Excel Viewer 2007 Service Pack 3
View patch
microsoftpatch availablevia msrc
Product: Microsoft Office Compatibility Pack Service Pack 3
View patch

Vendor Advisories (1)

microsoft2017-Nov/CVE-2017-11877Important

Microsoft Office Excel Security Feature Bypass

Nov 14, 2017

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2017-11877
Issue TrackingPatchVendor Advisory
securityfocus.com / bid/101747
Third Party AdvisoryVDB Entry
securitytracker.com / id/1039783
Third Party AdvisoryVDB Entry