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.
References
| Link | Resource |
|---|---|
| https://github.com/RsyncProject/rsync/releases/tag/v3.4.3 | Release Notes |
| https://github.com/RsyncProject/rsync/security/advisories/GHSA-g37v-g3gj-pmwq | Vendor Advisory |
| https://www.vulncheck.com/advisories/rsync-integer-overflow-information-disclosure | Third Party Advisory |
Configurations
History
21 May 2026, 20:34
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:samba:rsync:*:*:*:*:*:*:*:* | |
| First Time |
Samba
Samba rsync |
|
| References | () https://github.com/RsyncProject/rsync/releases/tag/v3.4.3 - Release Notes | |
| References | () https://github.com/RsyncProject/rsync/security/advisories/GHSA-g37v-g3gj-pmwq - Vendor Advisory | |
| References | () https://www.vulncheck.com/advisories/rsync-integer-overflow-information-disclosure - Third Party Advisory |
20 May 2026, 02:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-20 02:16
Updated : 2026-05-21 20:34
NVD link : CVE-2026-43618
Mitre link : CVE-2026-43618
CVE.ORG link : CVE-2026-43618
JSON object : View
Products Affected
samba
- rsync