8.8

CVE-2018-8311: microsoft lync Improper Input Validation

CVSS: 8.8v3.0HighModified
Published 11-07-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-8311 is a high (CVSS 8.8) Improper Input Validation vulnerability in microsoft lync. EPSS estimates a 16.87% chance of exploitation in the next 30 days, higher than 97% of scored vulnerabilities.

Overall risk
39/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.0 (NVD)
EPSS score
16.87%
0%100%
Medium · +0.45 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-07-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

A remote code execution vulnerability exists when Skype for Business and Microsoft Lync clients fail to properly sanitize specially crafted content, aka "Remote Code Execution Vulnerability in Skype For Business and Lync." This affects Skype, Microsoft Lync.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

16.87%

Chance of exploitation in the next 30 days

Percentile

97%

Versus all other CVEs

30-day change

+0.45 pp

From 16.42% on 18-09-2026

18-09-202618-10-2026
EPSS score
16.87%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Microsoft4 products

1 vendor · 4 products

References

4 links