CVE-2026-43620

Published: Mag 20, 2026 Last Modified: Mag 20, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,9
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: active
Confidentiality: N/A
Integrity: N/A
Availability: N/A
MEDIUM 6,5
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: required
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high

Description

AI Translation Available

Rsync version 3.4.2 and prior contain a receiver-side out-of-bounds array read vulnerability in recv_files() in receiver.c that allows a malicious rsync server to crash the rsync client process. Attackers can exploit the vulnerability by setting CF_INC_RECURSE in compatibility flags and sending a specially crafted file list where the first sorted entry is not the leading dot directory, followed by a transfer record with ndx=0 and an iflag word without ITEM_TRANSFER, causing the receiver to read 8 bytes before the allocated pointer array and dereference an invalid pointer at an unmapped address, resulting in a deterministic SIGSEGV crash of the rsync client.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0003
Percentile
0,1th
Updated

Single Data Point

Only one EPSS measurement is available for this CVE. Trend analysis requires multiple data points over time.

125

Out-of-bounds Read

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Availability Other
Potential Impacts:
Read Memory Bypass Protection Mechanism Dos: Crash, Exit, Or Restart Varies By Context
Applicable Platforms
Languages: Memory-Unsafe, C, C++
Technologies: ICS/OT
View CWE Details
https://github.com/RsyncProject/rsync/releases/tag/v3.4.3
https://github.com/RsyncProject/rsync/releases/tag/v3.4.3
https://github.com/RsyncProject/rsync/security/advisories/G…
https://github.com/RsyncProject/rsync/security/advisories/GHSA-28pw-r563-rxvm
https://www.vulncheck.com/advisories/rsync-out-of-bounds-ar…
https://www.vulncheck.com/advisories/rsync-out-of-bounds-array-read-via-recv-fi…