CVE-2026-43618
MEDIUM
MEDIUM
Priority: 0.05
BB Relevance:
62/100
Published: 2026-05-20
Modified: 2026-11-08
First seen: 2026-11-08
Status: active
Attack Surface
Network
Low Complexity
No Interaction
Conf. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
Low
UI:
None
AT:
Present
VC:
High
VI:
None
VA:
High
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.
Weakness Classification (2)
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| RsyncProject | rsync | 0 < 3.4.3 |
References & Advisories (3)
vendor-advisory
third-party-advisory
release-notes