libcurl Buffer Overflow via old zlib 1.2.0.3 integer overflow (CURLOPT_ACCEPT_ENCODING)
CVE-2025-0725 Published on February 5, 2025

gzip integer overflow
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.

NVD

Vulnerability Analysis

CVE-2025-0725 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. An automatable proof of concept (POC) exploit exists. The potential impact of an exploit of this vulnerability is considered to be low. considered to have a small impact on confidentiality and integrity and availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
LOW
Integrity Impact:
LOW
Availability Impact:
LOW

Products Associated with CVE-2025-0725

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2025-0725 are published in these products:

Haxx Curl
 
Haxx Libcurl
 
NetApp Hci Baseboard Management Controller
 
NetApp Solidfire Hci Management Node
 
NetApp Solidfire Hci Storage Node
 
Oracle
 

Affected Versions

curl:

Exploit Probability

EPSS
0.90%
Percentile
75.38%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.