#VU103646 Integer overflow in cURL - CVE-2025-0725

Vulnerability identifier: #VU103646

Vulnerability risk: High

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2025-0725

CWE-ID: CWE-190

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
cURL
Client/Desktop applications / Other client software

Vendor: curl.haxx.se

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow when handling gzip decompression of content-encoded HTTP responses with the CURLOPT_ACCEPT_ENCODING option using zlib 1.2.0.3 or older. A remote attacker can send specially crafted response to the application, trigger an integer overflow and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

cURL: 7.10.5 - 8.11.1

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External links
https://curl.se/docs/CVE-2025-0725.html

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?