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.

Classification

CVE ID: CVE-2025-0725

Affected Products

Vendor: curl

Product: curl

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.05% (probability of being exploited)

EPSS Percentile: 18.33% (scored less or equal to compared to others)

EPSS Date: 2025-03-06 (when was this score calculated)

References

https://curl.se/docs/CVE-2025-0725.json
https://curl.se/docs/CVE-2025-0725.html
https://hackerone.com/reports/2956023

Timeline