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CVE-2020-8156: fedoraproject fedora Improper Certificate Validation

CVSS: 7.0v3.1HighModified
Published 12-05-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-8156 is a high (CVSS 7.0) Improper Certificate Validation vulnerability in fedoraproject fedora. EPSS estimates a 0.96% chance of exploitation in the next 30 days, higher than 60.7% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.0/10
010
High · v3.1 (NVD)
EPSS score
0.96%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 12-05-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

A missing verification of the TLS host in Nextcloud Mail 1.1.3 allowed a man in the middle attack.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

0.96%

Chance of exploitation in the next 30 days

Percentile

61%

Versus all other CVEs

30-day change

+0.02 pp

From 0.93% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.96%

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

Fedoraproject1 product
Nextcloud1 product

2 vendors · 2 products

References

2 links