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CVE-2018-8474

57
FAUCET Score

CVE-2018-8474 describes a security feature bypass vulnerability in Microsoft Lync for Mac 2011, stemming from its failure to properly sanitize specially crafted messages. This vulnerability carries a high CVSS score of 7.5, indicating it can be exploited remotely with low attack complexity, potentially leading to high integrity impact without requiring user interaction. While not currently listed on CISA's KEV catalog, an exploit (EDB-45936) exists for forced browsing/download, and it has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2011CPE matchmatch criteria
cpe:2.3:a:microsoft:lync_for_mac:2011:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
38.18%
Probability of exploitation in next 30 days
EPSS Percentile
98.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-45936 · Dec 4, 2018
This CVE's current EPSS score of 0.3818 is in the 97th percentile among its peer group of 51,506 CVEs.

Social Chatter

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

Vendor Patches (1)

microsoftvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

microsoft2018-Sep/CVE-2018-8474Moderate

Lync for Mac 2011 Security Feature Bypass Vulnerability

Sep 11, 2018

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2018-8474
Vendor Advisory
exploit-db.com / exploits/45936
ExploitThird Party AdvisoryVDB Entry
securityfocus.com / bid/105268
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041633
Third Party AdvisoryVDB Entry