---
title: "CVE-2024-12086: Rsync: rsync server leaks arbitrary client files"
url: https://erroneo.us/security/cve/CVE-2024-12086/
description: "CVE-2024-12086 (rsync): A flaw was found in rsync. It could allow a server to enumerate the contents of an arbitrary file from the client's machine. This…"
type: vulnerability-record
section: "Security Digest"
date_published: 2025-01-14
date_modified: 2026-10-21
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2024-12086"
kev: false
cvss: 6.1
epss: 0.01789
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2024-12086: Rsync: rsync server leaks arbitrary client files

**Signal:** Normal patch cycle. No exploitation signal; fix it in your next routine update if you are affected. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 1.8% , percentile 78: FIRST’s model estimates a 1.8% chance of exploitation activity in the next 30 days, higher than 78% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Needs a user to click or open something. Phishing makes that realistic, but it is not wormable.
- Editorial verdict: Check exposure. rsync: Six Flaws Incl. Daemon Heap Overflow (CVE-2024-12084) — Distros shipped fixes in January 2025 and there is no known exploitation, but internet-facing rsync daemons have since needed two more security releases, so verify you run a current rsync rather than just 3.4.0.

## What it is

A flaw was found in rsync. It could allow a server to enumerate the contents of an arbitrary file from the client's machine. This issue occurs when files are being copied from a client to a server. During this process, the rsync server will send checksums of local data to the client to compare with in order to determine what data needs to be sent to the server. By sending specially constructed checksum values for arbitrary files, an attacker may be able to reconstruct the data of those files byte-by-byte based on the responses from the client.

## Affected products (CVE record)

-  rsync: <= 3.3.0
- Red Hat Red Hat Enterprise Linux 10: see advisory
- Red Hat Red Hat Enterprise Linux 9: see advisory
- Red Hat Red Hat Enterprise Linux 9: see advisory
- Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support: see advisory
- Red Hat Red Hat Discovery 2: see advisory
- Red Hat Red Hat Enterprise Linux 6: see advisory
- Red Hat Red Hat Enterprise Linux 7: see advisory
- Red Hat Red Hat Enterprise Linux 8: see advisory
- Red Hat Red Hat OpenShift Container Platform 4: see advisory

## Severity

- redhat CVSS 3.1: 6.1 `CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable no , technical impact partial .
- FIRST EPSS (model of 2026-10-21): 1.79% probability of exploitation activity in the next 30 days; percentile 78.

## Sources

- [RHBA-2025:6470](https://access.redhat.com/errata/RHBA-2025:6470)
- [RHSA-2026:19368](https://access.redhat.com/errata/RHSA-2026:19368)
- [RHSA-2026:20603](https://access.redhat.com/errata/RHSA-2026:20603)
- [RHSA-2026:29197](https://access.redhat.com/errata/RHSA-2026:29197)
- [CVE.org record CVE-2024-12086](https://www.cve.org/CVERecord?id=CVE-2024-12086)
- [NVD entry CVE-2024-12086](https://nvd.nist.gov/vuln/detail/CVE-2024-12086)
- [access.redhat.com](https://access.redhat.com/security/cve/CVE-2024-12086)
- [RHBZ#2330577](https://bugzilla.redhat.com/show_bug.cgi?id=2330577)
- [kb.cert.org](https://kb.cert.org/vuls/id/952657)
- [github.com](https://github.com/google/security-research/security/advisories/GHSA-p5pg-x43v-mvqj)
- [security.netapp.com](https://security.netapp.com/advisory/ntap-20250131-0002/)
- [lists.debian.org](https://lists.debian.org/debian-lts-announce/2025/01/msg00008.html)
- [kb.cert.org](https://www.kb.cert.org/vuls/id/952657)

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Source page: https://erroneo.us/security/cve/CVE-2024-12086/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt