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CVE-2016-5017

30
FAUCET Score

CVE-2016-5017 describes a buffer overflow vulnerability in the C cli shell of Apache ZooKeeper versions prior to 3.4.9 and 3.5.3. This flaw allows attackers to achieve unspecified impact by providing a long command string when using the "cmd:" batch mode syntax. The vulnerability carries a high CVSS score of 8.1, indicating a severe risk with network-based attacks, high impact on confidentiality, integrity, and availability, but requiring high attack complexity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.4.8CPE matchmatch criteria
cpe:2.3:a:apache:zookeeper:*:*:*:*:*:*:*:*
3.5.0CPE matchmatch criteria
cpe:2.3:a:apache:zookeeper:3.5.0:*:*:*:*:*:*:*
3.5.1CPE matchmatch criteria
cpe:2.3:a:apache:zookeeper:3.5.1:*:*:*:*:*:*:*
3.5.2CPE matchmatch criteria
cpe:2.3:a:apache:zookeeper:3.5.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
7.82%
Probability of exploitation in next 30 days
EPSS Percentile
94.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0782 is in the 72nd percentile among its peer group of 8,913 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 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

Vendor Advisories (1)

redhatCVE-2016-5017Low

zookeeper: Buffer overflow vulnerability in C cli shell

Sep 16, 2016

References

packetstormsecurity.com / files/138755/ZooKeeper-3.4.8-3.5.2-Buffer-Overflow.html
ExploitThird Party AdvisoryVDB Entry
git-wip-us.apache.org / repos/asf
git-wip-us.apache.org / repos/asf
lists.apache.org / thread.html/053d9ce4d579b02203db18545fee5e33f35f2932885459b74d1e4272%40%3Cissues.activemq.apache.org%3E
lists.apache.org / thread.html/bcce5a9c532b386c68dab2f6b3ce8b0cc9b950ec551766e76391caa3%40%3Ccommits.nifi.apache.org%3E
lists.apache.org / thread.html/r4b743f407244294f316325458ccaabfce9cd70ca3a6423dbe574035c%40%3Cnotifications.dubbo.apache.org%3E
lists.apache.org / thread.html/rca37935d661f4689cb4119f1b3b224413b22be161b678e6e6ce0c69b%40%3Ccommits.nifi.apache.org%3E
cloudera.com / documentation/other/security-bulletins/topics/csb_topic_1.html
oracle.com / security-alerts/cpujul2020.html
zookeeper.apache.org / security.html
Vendor Advisory
openwall.com / lists/oss-security/2016/09/17/3
Release NotesThird Party Advisory
securityfocus.com / bid/93044