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HIGH

CVE-2025-0725

CVSS v3

7.3

HIGH

EPSS Score

1.3 %

exploit probability, as of 2026-09-25

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

When libcurl is asked to perform automatic gzip decompression of content-encoded HTTP responses with the `CURLOPT_ACCEPT_ENCODING` option, **using zlib 1.2.0.3 or older**, an attacker-controlled integer overflow would make libcurl perform a buffer overflow.

Technical details

Published
2025-02-05

Frequently asked questions

What is CVE-2025-0725?

When libcurl is asked to perform automatic gzip decompression of content-encoded HTTP responses with the `CURLOPT_ACCEPT_ENCODING` option, **using zlib 1.2.0.3 or older**, an attacker-controlled integer overflow would make libcurl perform a buffer overflow.

Is CVE-2025-0725 actively exploited?

Active exploitation of CVE-2025-0725 has not been confirmed. Its EPSS score was 1.3% on 2026-09-25, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-0725?

CVE-2025-0725 has a CVSS v3 base score of 7.3 (HIGH severity).

Is CVE-2025-0725 affecting your environment?

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