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CVE-2016-5001

20
FAUCET Score

CVE-2016-5001 is an information disclosure vulnerability affecting Apache Hadoop versions prior to 2.6.4 and 2.7.x before 2.7.2, specifically within the HDFS short-circuit reads feature. A local attacker on an HDFS DataNode could craft a block token to gain unauthorized read access to arbitrary files by guessing specific token fields. With a CVSS score of 5.5 (Medium), this vulnerability has a low attack complexity and requires local access, but can lead to high confidentiality impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.3CPE matchmatch criteria
cpe:2.3:a:apache:hadoop:*:*:*:*:*:*:*:*
2.7.0CPE matchmatch criteria
cpe:2.3:a:apache:hadoop:2.7.0:*:*:*:*:*:*:*
2.7.1CPE matchmatch criteria
cpe:2.3:a:apache:hadoop:2.7.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.63%
Probability of exploitation in next 30 days
EPSS Percentile
46.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0063 is in the 94th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 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 (2)

mavenpatch availablevia ghsa
Product: org.apache.hadoop:hadoop-commonFixed in: 2.6.4
mavenpatch availablevia ghsa
Product: org.apache.hadoop:hadoop-commonFixed in: 2.7.2

Vendor Advisories (1)

mavenGHSA-8r28-r8cp-g6cpmedium

Exposure of Sensitive Information to an Unauthorized Actor in Apache Hadoop

May 13, 2022

References

seclists.org / oss-sec/2016/q4/698
Mailing ListThird Party Advisory
lists.apache.org / thread.html/r66de86b9a608c1da70b2d27d765c11ec88edf6e5dd6f379ab33e072a%40%3Cuser.flink.apache.org%3E
securityfocus.com / bid/94950
Third Party AdvisoryVDB Entry