HIGH
PackLinuxElf64::unpack in p_lx_elf.cpp in UPX 3.95 allows remote attackers to cause a denial of service (double free), limit the ability of a malware scanner to operate on the entire original data, or possibly have unspecified other impact via a crafted file
Published May 18, 2018
7.8
HIGHCVSS 3.0
EPSS 2.44%
Description
PackLinuxElf64::unpack in p_lx_elf.cpp in UPX 3.95 allows remote attackers to cause a denial of service (double free), limit the ability of a malware scanner to operate on the entire original data, or possibly have unspecified other impact via a crafted file.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.8 HIGH NVD
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
6.8 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.44% 0.02435
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02435
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.44% (0.02435) | 83.69th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.50% (0.02495) | 82.55th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.53% (0.00528) | 65.18th | v4 (v2025.03.14) |
| Dec 17, 2024 | 4.71% (0.04710) | 92.54th | v3 (v2023.03.01) |
| Dec 12, 2024 | 2.01% (0.02006) | 89.34th | v3 (v2023.03.01) |
| Jun 2, 2024 | 1.73% (0.01729) | 87.88th | v3 (v2023.03.01) |
| Apr 27, 2024 | 1.45% (0.01447) | 86.45th | v3 (v2023.03.01) |
| Mar 27, 2024 | 1.24% (0.01237) | 85.15th | v3 (v2023.03.01) |
| Sep 3, 2023 | 1.03% (0.01031) | 82.03th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.87% (0.00868) | 79.84th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.78% (0.01776) | 76.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.78% (0.01776) | 53.99th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.21% (0.03209) | 66.48th | v5 (v2026.06.15) |
| Apr 14, 2021 | 3.21% (0.03209) | 0.00th | v1 |
Weaknesses (1)
References (9)
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00001.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00003.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00007.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00008.html vendor-advisoryx_refsource_SUSE
- https://github.com/upx/upx/blob/devel/NEWS x_refsource_MISCRelease Notes
- https://github.com/upx/upx/issues/206 x_refsource_MISCExploitThird Party Advisory
- https://github.com/upx/upx/issues/207 x_refsource_MISCExploitThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE/ vendor-advisoryx_refsource_FEDORA
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published May 18, 2018
Updated Aug 5, 2024
Reserved May 18, 2018
Link CVE-2018-11243
CISA Vulnrichment
Updated n/a