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Medium severity · published Mar 27, 2025
CVE-2025-2849
A vulnerability, which was classified as problematic, was found in UPX up to 5.0.0
5.5
CVSS
0.3%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UP
Upx · Upx
through 5.0.0 · source: NVD
Affected product
UP
Upx
Upx
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-2849
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-2849
Patch
https://github.com/upx/upx/commit/e0b6ff192412f5bb5364c1948f4f6b27a0cd5ea2
Exploit
https://github.com/upx/upx/issues/898
Exploit
https://github.com/upx/upx/issues/898#issuecomment-2734082143
Product
https://github.com/user-attachments/files/19307868/input.zip
Permissions Required
https://vuldb.com/?ctiid.301494
Third Party Advisory
https://vuldb.com/?id.301494
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