Dissecting UAT-8099: New persistence mechanisms and regional focus

Cisco Talos has identified a new campaign by UAT-8099, active from late 2025 to early 2026, that is targeting vulnerable Internet Information Services IIS servers across Asia with a specific focus on victims in Thailand and Vietnam. Analysis confirms significant operational overlaps between this...

Linux Distros Unpatched Vulnerability : CVE-2019-20051

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A floating-point exception was discovered in PackLinuxElf::elfhash in plxelf.cpp in UPX 3.95. The vulnerability causes an application crash, which leads to deni...

UBUNTU-CVE-2025-2849

A vulnerability, which was classified as problematic, was found in UPX up to 5.0.0. Affected is the function PackLinuxElf64::unDTINIT of the file src/plxelf.cpp. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been...

UPX security vulnerabilities

UPX is a free, secure, portable, scalable, high-performance executable shelling program for a wide range of executable formats. A security vulnerability exists in UPX 5.0.0 and earlier versions, which stems from an incorrect operation of the PackLinuxElf64::unDTINIT function that can cause a heap...

SUSE CVE-2021-43311

A heap-based buffer overflow was discovered in upx, during the generic pointer 'p' points to an inaccessible address in func getle32. The problem is essentially caused in PackLinuxElf32::elflookup at plxelf.cpp:5382...

SUSE CVE-2021-43312

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::invertptdynamic at plxelf.cpp:5239...

Heap-based Buffer Overflow

Overview Affected versions of this package are vulnerable to Heap-based Buffer Overflow due to the generic pointer p pointing to an inaccessible address in the getle32. The problem is essentially caused in PackLinuxElf32::elflookup at plxelf.cpp:5368. Remediation Upgrade upx to version 4.2.1 or...

Buffer Overflow

Overview Affected versions of this package are vulnerable to Buffer Overflow due to the variable bucket pointing to an inaccessible address. The issue can be triggered in the function PackLinuxElf64::invertptdynamic at plxelf.cpp:5239. Remediation Upgrade upx to version 4.2.1 or higher. Reference...

Heap-based Buffer Overflow

Overview Affected versions of this package are vulnerable to Heap-based Buffer Overflow due to the generic pointer p pointing to an inaccessible address in the getle32 function. The problem is essentially caused in PackLinuxElf32::elflookup at plxelf.cpp:5382. Remediation Upgrade upx to version...

DEBIAN-CVE-2021-43313

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 PackLinuxElf32::invertptdynamic at plxelf.cpp:1688...

UBUNTU-CVE-2021-43314

A heap-based buffer overflows was discovered in upx, during the generic pointer 'p' points to an inaccessible address in func getle32. The problem is essentially caused in PackLinuxElf32::elflookup at plxelf.cpp:5368...

UBUNTU-CVE-2021-43312

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::invertptdynamic at plxelf.cpp:5239...

UPX Buffer Error Vulnerability

UPX is a portable and extensible executable compression program. A security vulnerability exists in UPX, which stems from an issue in the function PackLinuxElf32::elflookup in plxelf.cpp:5368 that causes the generic pointer p to point to an inaccessible address in func getle32...

UPX Buffer Error Vulnerability

UPX is a portable and extensible executable compression program. A security vulnerability exists in UPX, which stems from an issue in the function PackLinuxElf32::elflookup in plxelf.cpp:5382 that causes the generic pointer p to point to an inaccessible address in func getle32...

PT-2023-12432 · Upx +1 · Upx +1

Name of the Vulnerable Software and Affected Versions: upx affected versions not specified Description: A heap-based buffer overflow was discovered in the upx software. The issue occurs when a generic pointer p points to an inaccessible address in the get le32 function. This problem is essentiall...

UPX Buffer Error Vulnerability

UPX is a portable and extensible executable compression program. A security vulnerability exists in UPX, which stems from function PackLinuxElf64::invertptdynamic in plxelf.cpp:5239 that causes the "bucket" variable to point to an inaccessible address...

UPX Buffer Error Vulnerability

UPX is a portable and extensible executable compression program. A security vulnerability exists in UPX, which stems from an issue in function PackLinuxElf32::elflookup in plxelf.cpp:5404 that causes the generic pointer p to point to an inaccessible address in func getle32...

UPX Buffer Error Vulnerability

UPX is a portable and extensible executable compression program. A security vulnerability exists in UPX, which stems from an issue in function PackLinuxElf32::elflookup in plxelf.cpp:5349 that causes the generic pointer p to point to an inaccessible address in func getle32...

PT-2023-12431 · Upx +1 · Upx +1

Name of the Vulnerable Software and Affected Versions: upx affected versions not specified Description: A heap-based buffer overflow was discovered in upx. The issue occurs when the generic pointer p points to an inaccessible address in the get le32 function. This problem is essentially caused in...

SysUpdate Malware Strikes Again with Linux Version and New Evasion Tactics

The threat actor known as Lucky Mouse has developed a Linux version of a malware toolkit called SysUpdate, expanding on its ability to target devices running the operating system. The oldest version of the updated artifact dates back to July 2022, with the malware incorporating new features...