CVE-2016-8399 [High] | Security Vulnerability in Linux Kernel

An elevation of privilege vulnerability in the kernel networking subsystem could enable a local malicious application to execute arbitrary code within the context of the kernel. This issue is rated as Moderate because it first requires compromising a privileged process and current compiler optimizations restrict access to the vulnerable code. Product: Android. Versions: Kernel-3.10, Kernel-3.18. Android ID: A-31349935.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.25%	2.34%	+2.10%
2	2026-03-11	0.35%	0.25%	-0.10%
3	2025-03-30	—	0.35%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.25%

2.34%

+2.10%

2026-03-11

0.35%

0.25%

-0.10%

2025-03-30

—

0.35%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.0	3.1	HIGH	`CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:H) Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:R) A real person has to do something—click, install, enable—otherwise it doesn’t land. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.0	5.9	[email protected]
7.6	2.0	HIGH	`AV:N/AC:H/Au:N/C:C/I:C/A:C` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:H) Exploitation requires uncommon or highly specific conditions. Authentication (AU:N) No authentication is required. Confidentiality impact (C:C) Complete confidentiality impact. Integrity impact (I:C) Complete integrity impact. Availability impact (A:C) Complete availability impact.	4.9	10.0	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.0

3.1

HIGH

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

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H): Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R): A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.0

5.9

[email protected]

7.6

2.0

HIGH

AV:N/AC:H/Au:N/C:C/I:C/A:C Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:H): Exploitation requires uncommon or highly specific conditions.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:C): Complete confidentiality impact.
Integrity impact (I:C): Complete integrity impact.
Availability impact (A:C): Complete availability impact.

4.9

10.0

[email protected]

OS Trackers for CVE-2016-8399

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2016-8399 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2016-8399
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2016-8399
`suse`	medium	CVE-2016-8399 severity moderate: SUSE including 150 source package names (kernel-3.10.0-693.5.2.el7, kernel-abi-whitelists-3.10.0-693.5.2.el7, …), 288 product×package rows across 26 product lines (SUSE Liberty Linux 7, SUSE Linux Enterprise Desktop 12 SP1, … (26 product lines)): Fixed 266, Known Not Affected 22.	https://www.suse.com/security/cve/CVE-2016-8399/
`ubuntu`	medium	CVE-2016-8399 medium priority: Ubuntu including 32 source packages (linux, linux-armadaxp, …), 216 status rows across 7 suites (artful, precise, trusty, upstream, xenial, yakkety, zesty): DNE 145, released 42, not-affected 22, ignored 7.	https://ubuntu.com/security/CVE-2016-8399

Affected software / configurations for CVE-2016-8399

Vendor	Product	Version	Raw CPE
linux	linux_kernel	>= 3.19, < 4.1.37	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.2, < 4.4.38	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.5, < 4.8.14	cpe:2.3:o:linux:linux_kernel::::::::

References for CVE-2016-8399

URL	Tags
http://rhn.redhat.com/errata/RHSA-2017-0817.html	Third Party Advisory
http://www.securityfocus.com/bid/94708	Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2017:0869	Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2930	Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2931	Third Party Advisory
https://source.android.com/security/bulletin/2016-12-01.html	Vendor Advisory
https://support.f5.com/csp/article/K23030550?utm_source=f5support&amp%3Butm_medium=RSS	Third Party Advisory

URL

CVE-2016-8399

Exploit prediction scoring system (EPSS) score for CVE-2016-8399

Common vulnerability scoring system (CVSS) metrics for CVE-2016-8399

Weakness enumeration for CVE-2016-8399

OS Trackers for CVE-2016-8399

Affected software / configurations for CVE-2016-8399

References for CVE-2016-8399