CVE-2016-9299

Improper Neutralization of Special Elements used in an LDAP Query in Jenkins

9.8 CriticalPublic exploitFix available

The remoting module in Jenkins before 2.32 and LTS before 2.19.3 allows remote attackers to execute arbitrary code via a crafted serialized Java object, which triggers an LDAP query to a third-party server.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

96.9%Up 10.5 points since Feb 4, 2022

What each source reports

NVD Score used 9.8

Record: CVE-2016-9299
CVSS 3.0: 9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-90
Updated: 2026-11-02

CVE List No score

Record: CVE-2016-9299
Updated: 2026-11-02

EUVDEUVD-2022-2070 No score

Record: EUVD-2022-2070
Updated: 2026-11-03

GitHub AdvisoriesGHSA-2x9h-h3c4-wqqh 9.8

Improper Neutralization of Special Elements used in an LDAP Query in Jenkins

Record: GHSA-2x9h-h3c4-wqqh
CVSS 3.0: 9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-90
Updated: 2026-11-02

OSV 9.8

Record: CVE-2016-9299
CVSS 3.0: 9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVGHSA-2x9h-h3c4-wqqh 9.8

Improper Neutralization of Special Elements used in an LDAP Query in Jenkins

Record: GHSA-2x9h-h3c4-wqqh
CVSS 3.0: 9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-90
Updated: 2026-11-02

OSVMGASA-2016-0406 No score

Updated jenkins-remoting packages fix security vulnerability

An unauthenticated remote code execution vulnerability allowed attackers to transfer a serialized Java object to the Jenkins CLI, making Jenkins connect to an attacker-controlled LDAP server, which in turn can send a serialized payload leading to code execution, bypassing existing protection mechanisms. (CVE-2016-9299)

Record: MGASA-2016-0406
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`org.jenkins-ci.main:jenkins-core` Maven	2.20 to 2.31	2.32
`org.jenkins-ci.main:jenkins-core` Maven	through 2.19.2	2.19.3
`org.jenkins-ci.main:jenkins-core` Maven	2.20 up to 2.32, plus listed versions 2.212.222.232.242.25 Show 6 moreShow less 2.262.272.282.292.302.31	2.32
`org.jenkins-ci.main:jenkins-core` Maven	before 2.19.3, plus listed versions 1.3961.3971.3981.3991.400 Show 45 moreShow less 1.4011.4031.4041.4051.4061.4071.4081.4091.409.11.409.21.409.31.4101.4111.4121.4131.4141.4151.4161.4171.4181.4191.4201.4211.4221.4231.4241.424.11.424.21.424.31.424.41.424.51.424.61.4251.4261.4271.4281.4291.4301.4311.4321.4331.4341.4351.4361.437	2.19.3
`jenkins-remoting` Mageia:5	before 2.53.4-1.mga5	2.53.4-1.mga5

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	Jenkins CLI - HTTP Java Deserialization (Metasploit)	2018-05-17
Metasploit	Jenkins CLI HTTP Java Deserialization Vulnerability	2016-11-16
PoC in GitHub	r00t4dm/Jenkins-CVE-2016-9299	2022-10-12

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, Metasploit, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2016-9299 is a critical vulnerability (CVSS 9.8) in Jenkins, published November 30, 2016. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 96.9%, the 99th percentile. Fixed in org.jenkins-ci.main:jenkins-core 2.32.

References

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This page doesn't list everything

Left out here: 305 versions. The JSON record has them.