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CVE-2020-25690

fontforge: SFD_GetFontMetaData() insufficient CVE-2020-5395 backport

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Severity

Moderate

Red Hat Product Security

8.8

CVSS 3.1

Review impact separately from score.

Published · January 21, 2020

Updated · June 28, 2026

Description

An out-of-bounds write flaw was found in FontForge while parsing SFD files containing certain LayerCount tokens. This flaw allows an attacker to manipulate the memory allocated on the heap, causing the application to crash or execute arbitrary code. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

Statement

The impact of this flaw is set to Moderate since upstream does not consider a network-facing application that accepts untrusted font files as a reasonable use of fontforge tool/library, making the impact of a possible exploitation of this flaw smaller.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer