CVE-2025-2849

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.

• CWE-119
• CWE-122
• CWE-787

• https://github.com/upx/upx/commit/e0b6ff192412f5bb5364c1948f4f6b27a0cd5ea2Patch
• https://github.com/upx/upx/issues/898Exploit, Issue Tracking
• https://github.com/upx/upx/issues/898#issuecomment-2734082143Exploit, Issue Tracking
• https://github.com/user-attachments/files/19307868/input.zipProduct
• https://vuldb.com/?ctiid.301494Permissions Required, VDB Entry
• https://vuldb.com/?id.301494Third Party Advisory, VDB Entry
• https://vuldb.com/?submit.522371Third Party Advisory, VDB Entry
• https://github.com/upx/upx/issues/898#issuecomment-2734082143Exploit, Issue Tracking

Published

Mar 27, 2025

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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