CVE-2020-25725

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

In Xpdf 4.02, SplashOutputDev::endType3Char(GfxState *state) SplashOutputDev.cc:3079 is trying to use the freed `t3GlyphStack->cache`, which causes an `heap-use-after-free` problem. The codes of a previous fix for nested Type 3 characters wasn't correctly handling the case where a Type 3 char referred to another char in the same Type 3 font.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-416

Affected software

Vendor	Product	Versions
Glyph & Cog	xpdf	4.02

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-25725Exploit, Issue Tracking, Third Party Advisory
https://forum.xpdfreader.com/viewtopic.php?f=3&t=41915Exploit, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ZUU5QG6SSVRTKZTR3A72LDRVZETEI63/Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VLOYVJSM54IL6I5RY4QTJGRS7PIEG44X/Mailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-25725Exploit, Issue Tracking, Third Party Advisory
https://forum.xpdfreader.com/viewtopic.php?f=3&t=41915Exploit, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ZUU5QG6SSVRTKZTR3A72LDRVZETEI63/Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VLOYVJSM54IL6I5RY4QTJGRS7PIEG44X/Mailing List, Third Party Advisory

Timeline

Published: Nov 21, 2020
Last modified: Jun 17, 2026
NVD status: Modified

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