CVE-2016-7946 [High] | Denial of Service in Libxi

CVE-2016-7946 is rated Moderate Risk (61.7/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.95%). EPSS rose +1.79% 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	1.16%	2.95%	+1.79%
2	2026-05-28	1.08%	1.16%	+0.08%
3	2025-10-01	—	1.08%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

1.16%

2.95%

+1.79%

2026-05-28

1.08%

1.16%

+0.08%

2025-10-01

—

1.08%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.5	3.0	HIGH	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H` 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:N) No account or special rights needed—anonymous or random user is enough. 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:N) Data isn’t meaningfully altered or forged. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	3.9	3.6	[email protected]
5.0	2.0	MEDIUM	`AV:N/AC:L/Au:N/C:N/I:N/A:P` 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:N) No authentication is required. Confidentiality impact (C:N) No confidentiality impact. Integrity impact (I:N) No integrity impact. Availability impact (A:P) Partial availability impact.	10.0	2.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.5

3.0

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 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:N): No account or special rights needed—anonymous or random user is enough.
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:N): Data isn’t meaningfully altered or forged.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

3.9

3.6

[email protected]

5.0

2.0

MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P 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:N): No authentication is required.
Confidentiality impact (C:N): No confidentiality impact.
Integrity impact (I:N): No integrity impact.
Availability impact (A:P): Partial availability impact.

10.0

2.9

[email protected]

OS Trackers for CVE-2016-7946

vendor	priority	summary	link
`debian`	low	CVE-2016-7946 low priority: Debian including 1 source packages (libxi), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2016-7946
`gentoo`	high	CVE-2016-7946: 1 GLSA(s) (201704-03), 8 atom(s) (x11-base/xorg-server, x11-libs/libICE, …); latest impact high.	https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2016-7946
`redhat`	low	—	https://access.redhat.com/security/cve/CVE-2016-7946
`suse`	medium	CVE-2016-7946 severity moderate: SUSE including 55 source package names (beta1:libX11-6-1.6.2-8.1, beta1:libX11-data-1.6.2-8.1, …), 258 product×package rows across 45 product lines (Container caasp/v4/nginx-ingress-controller, Image SLES12-SP5-Azure-BYOS, … (45 product lines)): Fixed 258.	https://www.suse.com/security/cve/CVE-2016-7946/
`ubuntu`	low	CVE-2016-7946 low priority: Ubuntu including 1 source packages (libxi), 17 status rows across 17 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, precise, trusty, upstream, xenial, yakkety, zesty): not-affected 10, ignored 4, released 2, DNE 1.	https://ubuntu.com/security/CVE-2016-7946

Affected software / configurations for CVE-2016-7946

Vendor	Product	Version	Raw CPE
x.org	libxi	<= 1.7.6	cpe:2.3:a:x.org:libxi::::::::
fedoraproject	fedora	24	cpe:2.3:o:fedoraproject:fedora:24:::::::*
fedoraproject	fedora	25	cpe:2.3:o:fedoraproject:fedora:25:::::::*

References for CVE-2016-7946

URL	Tags
http://www.openwall.com/lists/oss-security/2016/10/04/2
http://www.openwall.com/lists/oss-security/2016/10/04/4
http://www.securityfocus.com/bid/93374
http://www.securitytracker.com/id/1036945
https://cgit.freedesktop.org/xorg/lib/libXi/commit/?id=19a9cd607de73947fcfb104682f203ffe4e1f4e5
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C3NTWIWSQ575GREBVAOUQUIMDL5CDVGP/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KVTZ2XLPKLASQUIQA2GMKKAUOQIUMM7I/
https://lists.x.org/archives/xorg-announce/2016-October/002720.html
https://security.gentoo.org/glsa/201704-03

URL

CVE-2016-7946

Exploit prediction scoring system (EPSS) score for CVE-2016-7946

Common vulnerability scoring system (CVSS) metrics for CVE-2016-7946

Weakness enumeration for CVE-2016-7946

OS Trackers for CVE-2016-7946

Affected software / configurations for CVE-2016-7946

References for CVE-2016-7946