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CVE-2025-2849— UPX p_lx_elf.cpp un_DT_INIT heap-based overflow

Quick assessment

Affected
n/a UPX
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

UPX是一款免费、安全、可移植、可扩展、高性能的可执行文件加壳程序，适用于多种可执行格式。 UPX 5.0.0及之前版本存在安全漏洞，该漏洞源于PackLinuxElf64::un_DT_INIT函数的错误操作会导致堆缓冲区溢出。

CVSS 3.3 · Low EPSS 0.30% · P21

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2025-2849

Vulnerability Information
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Vulnerability Title
UPX p_lx_elf.cpp un_DT_INIT heap-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability, which was classified as problematic, was found in UPX up to 5.0.0. Affected is the function PackLinuxElf64::un_DT_INIT of the file src/p_lx_elf.cpp. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The patch is identified as e0b6ff192412f5bb5364c1948f4f6b27a0cd5ea2. It is recommended to apply a patch to fix this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
UPX 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
UPX是一款免费、安全、可移植、可扩展、高性能的可执行文件加壳程序，适用于多种可执行格式。 UPX 5.0.0及之前版本存在安全漏洞，该漏洞源于PackLinuxElf64::un_DT_INIT函数的错误操作会导致堆缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- UPX 5.0 -

II. Public POCs for CVE-2025-2849

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III. Intelligence Information for CVE-2025-2849

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Patches & Fixes for CVE-2025-2849 (2)

Vendor Advisories for CVE-2025-2849 (2)

News Coverage for CVE-2025-2849 (1)

Other References for CVE-2025-2849 (1)

Same Patch Batch · n/a · 2025-03-27 · 25 CVEs total

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Showing top 20 of 25 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: UPX
Same vendor: n/a
Same weakness: CWE-122

V. Comments for CVE-2025-2849

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