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CVE-2018-11766

29
FAUCET Score

CVE-2018-11766 is an incomplete security fix in Apache Hadoop versions 2.7.4 through 2.7.6, allowing a user who can escalate to the 'yarn' user to potentially execute arbitrary commands as root. With a CVSS score of 8.8 (High), this vulnerability presents a significant risk due to its low attack complexity and high impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.7.4, <= 2.7.6CPE matchmatch criteria
cpe:2.3:a:apache:hadoop:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.24%
Probability of exploitation in next 30 days
EPSS Percentile
87.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0324 is in the 86th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

mavenpatch availablevia ghsa
Product: org.apache.hadoop:hadoop-mainFixed in: 2.7.7

Vendor Advisories (2)

mavenGHSA-rqj9-cq6j-958rhigh

Arbitrary Command Execution in Hadoop

Dec 21, 2018
redhatCVE-2018-11766Important

hadoop: Privilege escalation to root (Incomplete fix for CVE-2016-6811)

Nov 27, 2018

References

lists.apache.org / thread.html/ff37bbbe09d5f03090e2dd2c3dea95de16ef4249e731f19b8959ce4c%40%3Cgeneral.hadoop.apache.org%3E
securityfocus.com / bid/106035
Third Party AdvisoryVDB Entry