CVE-2016-10164 [Critical] | Memory Corruption in Libxpm

Multiple integer overflows in libXpm before 3.5.12, when a program requests parsing XPM extensions on a 64-bit platform, allow remote attackers to cause a denial of service (out-of-bounds write) or execute arbitrary code via (1) the number of extensions or (2) their concatenated length in a crafted XPM file, which triggers a heap-based buffer overflow.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-04	6.20%	6.33%	+0.14%
2	2026-05-31	3.74%	6.20%	+2.46%
3	2026-01-23	—	3.74%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-04

6.20%

6.33%

+0.14%

2026-05-31

3.74%

6.20%

+2.46%

2026-01-23

—

3.74%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
9.8	3.0	CRITICAL	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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: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.	3.9	5.9	[email protected]
7.5	2.0	HIGH	`AV:N/AC:L/Au:N/C:P/I:P/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:P) Partial confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:P) Partial availability impact.	10.0	6.4	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

9.8

3.0

CRITICAL

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

3.9

5.9

[email protected]

7.5

2.0

HIGH

AV:N/AC:L/Au:N/C:P/I:P/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:P): Partial confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:P): Partial availability impact.

10.0

6.4

[email protected]

Weakness enumeration for CVE-2016-10164

OS Trackers for CVE-2016-10164

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2016-10164 not yet assigned priority: Debian including 1 source packages (libxpm), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2016-10164
`gentoo`	normal	CVE-2016-10164: 1 GLSA(s) (201701-72), 1 atom(s) (x11-libs/libXpm); latest impact normal.	https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2016-10164
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2016-10164
`suse`	high	CVE-2016-10164 severity important: SUSE including 97 source package names (beta1:libXpm4-3.5.11-5.1, drm-utils-2.4.74-1.el7, …), 232 product×package rows across 36 product lines (Container caasp/v4/nginx-ingress-controller, Image SLES12-SP5-Azure-SAP-BYOS, … (36 product lines)): Fixed 232.	https://www.suse.com/security/cve/CVE-2016-10164/
`ubuntu`	medium	CVE-2016-10164 medium priority: Ubuntu including 1 source packages (libxpm), 5 status rows across 5 suites (precise, trusty, upstream, xenial, yakkety): released 5.	https://ubuntu.com/security/CVE-2016-10164

Affected software / configurations for CVE-2016-10164

Vendor	Product	Version	Raw CPE
x.org	libxpm	<= 3.5.11	cpe:2.3:a:x.org:libxpm::::::::

References for CVE-2016-10164

URL	Tags
http://www.debian.org/security/2017/dsa-3772
http://www.openwall.com/lists/oss-security/2017/01/22/2	Mailing List Patch Third Party Advisory
http://www.openwall.com/lists/oss-security/2017/01/25/7	Mailing List Patch Third Party Advisory
http://www.securityfocus.com/bid/95785	Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2017:1865
https://cgit.freedesktop.org/xorg/lib/libXpm/commit/?id=d1167418f0fd02a27f617ec5afd6db053afbe185	Issue Tracking Patch Third Party Advisory
https://lists.freedesktop.org/archives/xorg/2016-December/058537.html	Issue Tracking Patch Third Party Advisory
https://security.gentoo.org/glsa/201701-72

URL

CVE-2016-10164

Exploit prediction scoring system (EPSS) score for CVE-2016-10164

Common vulnerability scoring system (CVSS) metrics for CVE-2016-10164

Weakness enumeration for CVE-2016-10164

OS Trackers for CVE-2016-10164

Affected software / configurations for CVE-2016-10164

References for CVE-2016-10164