Vulnerabilities (CVE)

Filtered by vendor Upx Subscribe
Filtered by product Upx
Total 35 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2021-20285 1 Upx 1 Upx 2025-04-11 8.3 HIGH 6.6 MEDIUM
A flaw was found in upx canPack in p_lx_elf.cpp in UPX 3.96. This flaw allows attackers to cause a denial of service (SEGV or buffer overflow and application crash) or possibly have unspecified other impacts via a crafted ELF. The highest threat from this vulnerability is to system availability.
CVE-2020-27796 1 Upx 1 Upx 2025-04-11 N/A 7.8 HIGH
A heap-based buffer over-read was discovered in the invert_pt_dynamic function in p_lx_elf.cpp in UPX 4.0.0 via a crafted Mach-O file.
CVE-2020-27788 1 Upx 1 Upx 2025-04-11 N/A 5.5 MEDIUM
An out-of-bounds read access vulnerability was discovered in UPX in PackLinuxElf64::canPack() function of p_lx_elf.cpp file. An attacker with a crafted input file could trigger this issue that could cause a crash leading to a denial of service.
CVE-2021-46179 1 Upx 1 Upx 2025-04-11 N/A 6.5 MEDIUM
Reachable Assertion vulnerability in upx before 4.0.0 allows attackers to cause a denial of service via crafted file passed to the the readx function.
CVE-2021-43312 1 Upx 1 Upx 2025-04-11 N/A 7.5 HIGH
A heap-based buffer overflow was discovered in upx, during the variable 'bucket' points to an inaccessible address. The issue is being triggered in the function PackLinuxElf64::invert_pt_dynamic at p_lx_elf.cpp:5239.
CVE-2019-20051 2 Fedoraproject, Upx 2 Fedora, Upx 2025-04-11 4.3 MEDIUM 5.5 MEDIUM
A floating-point exception was discovered in PackLinuxElf::elf_hash in p_lx_elf.cpp in UPX 3.95. The vulnerability causes an application crash, which leads to denial of service.
CVE-2023-23457 2 Fedoraproject, Upx 2 Fedora, Upx 2025-04-11 N/A 5.3 MEDIUM
A Segmentation fault was found in UPX in PackLinuxElf64::invert_pt_dynamic() in p_lx_elf.cpp. An attacker with a crafted input file allows invalid memory address access that could lead to a denial of service.
CVE-2021-43315 1 Upx 1 Upx 2025-04-11 N/A 7.5 HIGH
A heap-based buffer overflows was discovered in upx, during the generic pointer 'p' points to an inaccessible address in func get_le32(). The problem is essentially caused in PackLinuxElf32::elf_lookup() at p_lx_elf.cpp:5349
CVE-2019-20021 2 Fedoraproject, Upx 2 Fedora, Upx 2025-04-11 4.3 MEDIUM 5.5 MEDIUM
A heap-based buffer over-read was discovered in canUnpack in p_mach.cpp in UPX 3.95 via a crafted Mach-O file.
CVE-2020-27800 1 Upx 1 Upx 2025-04-11 N/A 7.8 HIGH
A heap-based buffer over-read was discovered in the get_le32 function in bele.h in UPX 4.0.0 via a crafted Mach-O file.
CVE-2019-20805 1 Upx 1 Upx 2025-04-11 4.3 MEDIUM 5.5 MEDIUM
p_lx_elf.cpp in UPX before 3.96 has an integer overflow during unpacking via crafted values in a PT_DYNAMIC segment.
CVE-2021-43311 1 Upx 1 Upx 2025-04-11 N/A 7.5 HIGH
A heap-based buffer overflow was discovered in upx, during the generic pointer 'p' points to an inaccessible address in func get_le32(). The problem is essentially caused in PackLinuxElf32::elf_lookup() at p_lx_elf.cpp:5382.
CVE-2019-14296 1 Upx 1 Upx 2025-04-11 6.8 MEDIUM 7.8 HIGH
canUnpack in p_vmlinx.cpp in UPX 3.95 allows remote attackers to cause a denial of service (SEGV or buffer overflow, and application crash) or possibly have unspecified other impact via a crafted UPX packed file.
CVE-2021-43314 1 Upx 1 Upx 2025-04-11 N/A 7.5 HIGH
A heap-based buffer overflows was discovered in upx, during the generic pointer 'p' points to an inaccessible address in func get_le32(). The problem is essentially caused in PackLinuxElf32::elf_lookup() at p_lx_elf.cpp:5368
CVE-2023-23456 2 Fedoraproject, Upx 2 Fedora, Upx 2025-04-11 N/A 5.3 MEDIUM
A heap-based buffer overflow issue was discovered in UPX in PackTmt::pack() in p_tmt.cpp file. The flow allows an attacker to cause a denial of service (abort) via a crafted file.