CVE-2025-2849

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.

CVSS v3.1 Score

3.3

LOW

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Weakness Type (CWE)

CWE-119 Buffer Overflow

CWE-122 CWE-122

CWE-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
upx	upx	< 5.0.0

References

Advisories & Patches

https://github.com/upx/upx/commit/e0b6ff192412f5bb5364c1948f4f6b27a0cd5ea2

Exploits

https://github.com/upx/upx/issues/898 https://github.com/upx/upx/issues/898#issuecomment-2734082143 https://github.com/upx/upx/issues/898#issuecomment-2734082143

Other References

https://github.com/user-attachments/files/19307868/input.zip https://vuldb.com/?ctiid.301494 https://vuldb.com/?id.301494 https://vuldb.com/?submit.522371

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 3.3 (LOW).

How severe is CVE-2025-2849? +

CVE-2025-2849 has a CVSS v3.1 score of 3.3 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2025-2849? +

CVE-2025-2849 affects products from upx, specifically: upx. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-2849? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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