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CVE-2025-67721

MEDIUM CVSS 4.0: 6.3 EPSS 0.05%
Updated Mar 17, 2026
Airlift
Parameter Value
CVSS 6.3 (MEDIUM)
Affected Versions 3.0 — 3.4
Fixed In 3.4
Type CWE-201, CWE-125 (Out-of-bounds Read)
Vendor Airlift
Public PoC No

Aircompressor is a library with ports of the Snappy, LZO, LZ4, and Zstandard compression algorithms to Java. In versions 3.3 and below, incorrect handling of malformed data in Java-based decompressor implementations for Snappy and LZ4 allow remote attackers to read previous buffer contents via crafted compressed input. With certain crafted compressed inputs, elements from the output buffer can end up in the uncompressed output, potentially leaking sensitive data.

This is relevant for applications that reuse the same output buffer to uncompress multiple inputs. This can be the case of a web server that allocates a fix-sized buffer for performance purposes. There is similar vulnerability in GHSA-cmp6-m4wj-q63q.

This issue is fixed in version 3.4.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v4.0

Vulnerable Products 2

Configuration From (including) Up to (excluding)
Airlift Aircompressor
cpe:2.3:a:airlift:aircompressor:*:*:*:*:*:*:*:*
2.0.3
Airlift Aircompressor
cpe:2.3:a:airlift:aircompressor:*:*:*:*:*:*:*:*
3.0 3.4