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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.80%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.3 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- EPSS
- 1.80% probability · 78th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- netapp/hci baseboard management controller · netapp/hci h610s firmware · netapp/hci h610c firmware · netapp/hci h615c firmware · netapp/solidfire \& hci management node · netapp/solidfire \& hci storage node · haxx/curl · haxx/libcurl
- Source
- 2499f714-1537-4658-8207-48ae4bb9eae9
EPSS 1.8% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://curl.se/docs/CVE-2025-0725.htmlVendor Advisory
- https://curl.se/docs/CVE-2025-0725.jsonVendor Advisory
- https://hackerone.com/reports/2956023Exploit, Issue Tracking
- http://www.openwall.com/lists/oss-security/2025/02/05/3Mailing List
- http://www.openwall.com/lists/oss-security/2025/02/06/2Mailing List
- http://www.openwall.com/lists/oss-security/2025/02/06/4Mailing List
- https://github.com/curl/curl/commit/76f83f0db23846e254d940ec7Patch
- https://security.netapp.com/advisory/ntap-20250306-0009/Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-089022.html
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.