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CVE-2023-23391

20
FAUCET Score

CVE-2023-23391 is a spoofing vulnerability affecting Microsoft Office for Android. With a CVSS score of 5.5 (MEDIUM), it requires user interaction (UI:R) and local access (AV:L) for an attacker to achieve high integrity impact (I:H) without confidentiality or availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or inclusion in CISA's KEV catalog. Despite low community discussion and media coverage, its EPSS score indicates a higher than average likelihood of exploitation compared to most CVEs.

Impacted Technologies

VendorProductVersion(s)CPE
16.0.16026.20172CPE matchmatch criteria
cpe:2.3:a:microsoft:365_copilot:16.0.16026.20172:*:*:*:*:android:*:*

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
0.65%
Probability of exploitation in next 30 days
EPSS Percentile
47.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0065 is in the 52nd 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 (2)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Microsoft Office for AndroidFixed in: 16.0.16026.20172
View patch

Vendor Advisories (1)

microsoft2023-Mar/CVE-2023-23391Important

Office for Android Spoofing Vulnerability

Mar 14, 2023

References

msrc.microsoft.com / update-guide/vulnerability/CVE-2023-23391
PatchVendor Advisory