#VU114558 Memory leak in xz - CVE-2025-58058

Vulnerability identifier: #VU114558

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-58058

CWE-ID: CWE-401

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
xz
Universal components / Libraries / Programming Languages & Components

Vendor: ulikunitz

Description
The vulnerability allows a remote attacker to perform a DoS attack.

The vulnerability exists due memory leak when decoding corrupted LZMA archives. A remote attacker can force the application to leak memory and perform denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

xz: 0.1 - 0.6.0 alpha.3

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External links
https://github.com/ulikunitz/xz/commit/88ddf1d0d98d688db65de034f48960b2760d2ae2
https://github.com/ulikunitz/xz/security/advisories/GHSA-jc7w-c686-c4v9

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.