MEDIUM
An invalid memory address dereference was discovered in the canUnpack function in p_mach.cpp in UPX 3.95 via a crafted Mach-O file
Published Dec 27, 2019
5.5
MEDIUMCVSS 3.1
EPSS 1.23%
Description
An invalid memory address dereference was discovered in the canUnpack function in p_mach.cpp in UPX 3.95 via a crafted Mach-O file.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
5.5 MEDIUM NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
No CVSS v3.0 score for this CVE.
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.23% 0.01227
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.01227
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 1.23% (0.01227) | 67.83th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.23% (0.01227) | 67.53th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.06% (0.00062) | 27.04th | v3 (v2023.03.01) |
| Jun 12, 2024 | 0.06% (0.00062) | 26.42th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00062) | 24.41th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.51% (0.01512) | 50.79th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.63% (0.03630) | 71.73th | v1 |
| Jan 6, 2022 | 3.63% (0.03630) | 71.48th | v1 |
| Jan 5, 2022 | 0.83% (0.00833) | 58.90th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.83% (0.00833) | 0.00th | v1 |
Weaknesses (1)
References (3)
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00003.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00007.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- https://github.com/upx/upx/issues/314 x_refsource_MISCExploitThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00003.html | vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory | |
| http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00007.html | vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory | |
| https://github.com/upx/upx/issues/314 | x_refsource_MISCExploitThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Dec 27, 2019
Updated Aug 5, 2024
Reserved Dec 27, 2019
Link CVE-2019-20053
CISA Vulnrichment
Updated n/a