Medium severity5.5NVD Advisory· Published Dec 27, 2019· Updated Jun 17, 2026
CVE-2019-20021
CVE-2019-20021
Description
A heap-based buffer over-read was discovered in canUnpack in p_mach.cpp in UPX 3.95 via a crafted Mach-O file.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
8cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
- UPX/UPXdescription
- osv-coords3 versionspkg:rpm/opensuse/upx&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/upx&distro=openSUSE%20Tumbleweedpkg:rpm/suse/upx&distro=SUSE%20Package%20Hub%2015%20SP1
< 3.96-lp151.3.3.1+ 2 more
- (no CPE)range: < 3.96-lp151.3.3.1
- (no CPE)range: < 3.96-3.2
- (no CPE)range: < 3.96-bp151.4.3.1
Patches
Vulnerability mechanics
References
5- github.com/upx/upx/issues/315nvdExploitIssue TrackingThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-02/msg00003.htmlnvdBroken Link
- lists.opensuse.org/opensuse-security-announce/2020-02/msg00007.htmlnvdBroken Link
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE/nvd
News mentions
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