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CVE-2020-1887

22
FAUCET Score

CVE-2020-1887 describes an incorrect validation of the TLS SNI hostname in osquery versions after 2.9.0 and before 4.2.0, affecting the linuxfoundation osquery product. This critical vulnerability, with a CVSS score of 9.1, allows an unauthenticated attacker to perform a Man-in-the-Middle (MITM) attack on osquery traffic, potentially leading to high confidentiality and integrity impacts, especially when a root chain of trust is not configured. There is currently no evidence of active exploitation, and no public exploit code or significant community discussion has been observed.

Impacted Technologies

VendorProductVersion(s)CPE
> 2.9.0, < 4.2.0CPE matchmatch criteria
cpe:2.3:a:linuxfoundation:osquery:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.28%
Probability of exploitation in next 30 days
EPSS Percentile
67.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0128 is in the 53rd percentile among its peer group of 36,821 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / osquery/osquery/pull/6197
PatchThird Party Advisory
facebook.com / security/advisories/cve-2020-1887
Third Party Advisory