# CVE-2025-0725: curl: When libcurl is asked to perform automatic gzip decompression of content-encoded HTTP responses with the `CURLOPT_ACC...

CVE-2025-0725 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2025-0725, released February 5, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-0725
- Priority: High
- CVSS: 7.3 (high)
- EPSS: 0.0180
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 5, 2025

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | curl Debian 13.5 (trixie) | 8.12.0+git20250209.89ed161+ds-1 | [DEBIAN-CVE-2025-0725](https://patchblox.com/security/data/fix/linux/debian-cve-2025-0725.md) | Feb 5, 2025 |
| Linux | curl Debian 14 | 8.12.0+git20250209.89ed161+ds-1 | [DEBIAN-CVE-2025-0725](https://patchblox.com/security/data/fix/linux/debian-cve-2025-0725.md) | Feb 5, 2025 |
| Linux | curl opensuse-leap 15.6 | 8.6.0-150600.4.21.1 | [SUSE-SU-2025:0369-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-0369-1.md) | Feb 5, 2025 |
| Linux | curl sles 15.6 | 8.6.0-150600.4.21.1 | [SUSE-SU-2025:0369-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-0369-1.md) | Feb 5, 2025 |
| Linux | ecs-service-connect-agent amzn 2023 | v1.34.4.2-1.amzn2023 | [ALAS2023-2025-1357](https://patchblox.com/security/data/fix/linux/alas2023-2025-1357.md) | Jan 7, 2026 |

---

Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.