CVE-2017-7858 [Critical] | Out-of-bounds Write in Freetype

CVE-2017-7858 is rated High Risk (70.7/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.41%). EPSS rose +1.83% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-01-05	0.58%	2.41%	+1.83%
2	2025-11-21	1.91%	0.58%	-1.33%
3	2025-11-18	—	1.91%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-01-05

0.58%

2.41%

+1.83%

2025-11-21

1.91%

0.58%

-1.33%

2025-11-18

—

1.91%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
9.8	3.1	CRITICAL	`CVSS:3.1/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

3.1

CRITICAL

CVSS:3.1/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]

OS Trackers for CVE-2017-7858

vendor	priority	summary	link
`debian`	unimportant	CVE-2017-7858 unimportant priority: Debian including 1 source packages (freetype), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2017-7858
`gentoo`	normal	CVE-2017-7858: 1 GLSA(s) (201706-14), 1 atom(s) (media-libs/freetype); latest impact normal.	https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2017-7858
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2017-7858
`suse`	medium	CVE-2017-7858 severity moderate: SUSE including 6 source package names (freetype2, freetype2-32bit, freetype2-devel, freetype2-devel-32bit, libfreetype6, libfreetype6-32bit), 24 product×package rows across 11 product lines (SUSE Linux Enterprise Desktop 12 SP1, SUSE Linux Enterprise Server 11 SP1 for Teradata, … (11 product lines)): Known Not Affected 24.	https://www.suse.com/security/cve/CVE-2017-7858/
`ubuntu`	medium	CVE-2017-7858 medium priority: Ubuntu including 1 source packages (freetype), 6 status rows across 6 suites (precise, trusty, upstream, xenial, yakkety, zesty): not-affected 5, needs-triage 1.	https://ubuntu.com/security/CVE-2017-7858

Affected software / configurations for CVE-2017-7858

Vendor	Product	Version	Raw CPE
freetype	freetype	<= 2.7.1	cpe:2.3:a:freetype:freetype::::::::

References for CVE-2017-7858

URL	Tags
http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=779309744222a736eba0f1731e8162fce6288d4e	Patch Third Party Advisory
http://www.securityfocus.com/bid/97682	Broken Link Third Party Advisory VDB Entry
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=738	Issue Tracking Third Party Advisory VDB Entry
https://security.gentoo.org/glsa/201706-14	Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2020.html	Third Party Advisory

URL

CVE-2017-7858

Exploit prediction scoring system (EPSS) score for CVE-2017-7858

Common vulnerability scoring system (CVSS) metrics for CVE-2017-7858

Weakness enumeration for CVE-2017-7858

OS Trackers for CVE-2017-7858

Affected software / configurations for CVE-2017-7858

References for CVE-2017-7858