Dashboard / CVE-2026-43617

CVE-2026-43617

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 63/100
Published: 2026-05-20 Modified: 2026-11-08 First seen: 2026-11-08 Status: active

Attack Surface

Network No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
AT: Present
VC: Low
VI: Low
VA: None

Description

Rsync version 3.4.2 and prior contain an authorization bypass vulnerability in the rsync daemon's hostname-based access control list enforcement when configured with chroot. Attackers can bypass hostname-based deny rules by controlling the PTR record for their source IP address, allowing connections from hostnames that administrators intended to deny when reverse DNS resolution fails and defaults to UNKNOWN.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
RsyncProject rsync 0 < 3.4.3

References & Advisories (3)

Bug Bounty Relevance

63 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

6.3 / 10.0 v4.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

0.28%
Raw Score 0.002820
Percentile 20.9%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00282
2026-11-12
0.00282
2026-11-10
0.00282
2026-11-09
0.00282
2026-11-08
0.00282

Intelligence Sources

mitre ref →

External Links