CVE-2017-7857

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-04-14 · updated 2026-06-17
Weakness: CWE-787

Description

FreeType 2 before 2017-03-08 has an out-of-bounds write caused by a heap-based buffer overflow related to the TT_Get_MM_Var function in truetype/ttgxvar.c and the sfnt_init_face function in sfnt/sfobjs.c.

Affected products

FreeType: from 2.7 before 2.8 — fixed in 2.8

How to fix

Upgrade to a fixed version: FreeType 2.8. Check the vendor advisory for mitigations.

References

http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=7bbb91fbf47fc0775cc9705673caf0c47a81f94b
http://www.securityfocus.com/bid/97680
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=759
https://security.gentoo.org/glsa/201706-14
https://www.oracle.com/security-alerts/cpuapr2020.html
http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=7bbb91fbf47fc0775cc9705673caf0c47a81f94b
http://www.securityfocus.com/bid/97680
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=759
https://security.gentoo.org/glsa/201706-14
https://www.oracle.com/security-alerts/cpuapr2020.html

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