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CVE-2022-23280

20
FAUCET Score

CVE-2022-23280 is a security feature bypass vulnerability affecting Microsoft Outlook for Mac 2016. This medium-severity vulnerability, with a CVSS score of 5.3, allows an unauthenticated attacker to achieve low-impact confidentiality compromise over a network with low attack complexity. There is no evidence of active exploitation, nor is public exploit code available, as indicated by its absence from KEV, Metasploit, Nuclei, and ExploitDB. Despite this, the vulnerability has garnered some community attention and media coverage, appearing in two articles and two community discussions.

Impacted Technologies

VendorProductVersion(s)CPE
< 16.57CPE matchmatch criteria
cpe:2.3:a:microsoft:outlook_2016:*:*:*:*:*:macos:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.39%
Probability of exploitation in next 30 days
EPSS Percentile
82.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0239 is in the 73rd percentile among its peer group of 23,703 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

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

Remediation

Patch Available

Vendor Patches (1)

microsoftpatch availablevia msrc
Product: Microsoft Outlook 2016 for MacFixed in: 16.57

Vendor Advisories (1)

microsoft2022-Feb/CVE-2022-23280Important

Microsoft Outlook for Mac Security Feature Bypass Vulnerability

Feb 8, 2022

References

msrc.microsoft.com / update-guide/vulnerability/CVE-2022-23280