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Vulnerabilities CVE-2026-43618

CVE-2026-43618

Medium
Open
TLP:CLEAR

Rsync < 3.4.3 Integer Overflow Information Disclosure

NVD CVE.org
Critical Infrastructure

AI Analysis

No AI analysis yet.

Description

Rsync version 3.4.2 and prior contain an integer overflow vulnerability in the compressed-token decoder where a 32-bit signed counter is not checked for overflow, allowing a malicious sender to trigger an overflow that causes the receiver process to read and return data from outside the intended buffer bounds. Attackers can exploit this vulnerability to disclose process memory contents including environment variables, passwords, heap and stack data, and library memory pointers, significantly reducing ASLR effectiveness and facilitating further exploitation.

Details

CVSS Score
6.1
EPSS Score
0.78%

52.9th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N
Confidence
90%
Published
May 20, 2026
Last Modified
Aug 25, 2026
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