CVE-2016-3721 [Medium] | Security Vulnerability in Openshift

CVE-2016-3721 is rated Moderate Risk (46.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.14%). EPSS rose +1.76% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.38%	2.14%	+1.76%
2	2026-03-01	0.16%	0.38%	+0.22%
3	2025-06-17	—	0.16%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.38%

2.14%

+1.76%

2026-03-01

0.16%

0.38%

+0.22%

2025-06-17

—

0.16%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
4.3	3.1	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:N) Service keeps running; no real outage angle.	2.8	1.4	134c704f-9b21-4f2e-91b3-4a467353bcc0
6.5	3.0	MEDIUM	`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:N) Service keeps running; no real outage angle.	2.8	3.6	[email protected]
4.0	2.0	MEDIUM	`AV:N/AC:L/Au:S/C:N/I:P/A:N` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. Authentication (AU:S) A single authentication is required. Confidentiality impact (C:N) No confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:N) No availability impact.	8.0	2.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

4.3

3.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:L): Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N): Service keeps running; no real outage angle.

2.8

1.4

134c704f-9b21-4f2e-91b3-4a467353bcc0

6.5

3.0

MEDIUM

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

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N): Service keeps running; no real outage angle.

2.8

3.6

[email protected]

4.0

2.0

MEDIUM

AV:N/AC:L/Au:S/C:N/I:P/A:N Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:L): Exploitation conditions are straightforward and predictable.
Authentication (AU:S): A single authentication is required.
Confidentiality impact (C:N): No confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:N): No availability impact.

8.0

2.9

[email protected]

OS Trackers for CVE-2016-3721

vendor	priority	summary	link
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2016-3721
`ubuntu`	medium	CVE-2016-3721 medium priority: Ubuntu including 1 source packages (jenkins), 7 status rows across 7 suites (precise, trusty, upstream, wily, xenial, yakkety, zesty): DNE 5, ignored 1, needs-triage 1.	https://ubuntu.com/security/CVE-2016-3721

Affected software / configurations for CVE-2016-3721

Vendor	Product	Version	Raw CPE
redhat	openshift	3.1	cpe:2.3:a:redhat:openshift:3.1::::enterprise:::
redhat	openshift	3.2	cpe:2.3:a:redhat:openshift:3.2::::enterprise:::
jenkins	jenkins	<= 1.651.1	cpe:2.3:a:jenkins:jenkins:::::lts:::*
jenkins	jenkins	<= 2.2	cpe:2.3:a:jenkins:jenkins::::::::

References for CVE-2016-3721

URL	Tags
http://rhn.redhat.com/errata/RHSA-2016-1773.html
http://www.openwall.com/lists/oss-security/2024/05/02/3
https://access.redhat.com/errata/RHSA-2016:1206
https://wiki.jenkins-ci.org/display/JENKINS/Plugins+affected+by+fix+for+SECURITY-170	Vendor Advisory
https://wiki.jenkins-ci.org/display/SECURITY/Jenkins+Security+Advisory+2016-05-11	Vendor Advisory
https://www.cloudbees.com/jenkins-security-advisory-2016-05-11	Vendor Advisory

URL

CVE-2016-3721

Exploit prediction scoring system (EPSS) score for CVE-2016-3721

Common vulnerability scoring system (CVSS) metrics for CVE-2016-3721

Weakness enumeration for CVE-2016-3721

GitHub Security Advisory for CVE-2016-3721

OS Trackers for CVE-2016-3721

Affected software / configurations for CVE-2016-3721

References for CVE-2016-3721