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CVE-2018-5764

28
FAUCET Score

CVE-2018-5764 describes a vulnerability in the parse_arguments function of rsyncd in rsync versions prior to 3.1.3, allowing remote attackers to bypass argument sanitization by repeatedly using the --protect-args option. This high-severity vulnerability (CVSS 7.5) has a low attack complexity and no user interaction required, potentially leading to high integrity impact, affecting various Canonical, Debian, and Samba rsync distributions. While no active exploitation, public exploit code, or significant community discussion has been observed, the vulnerability remains a concern for unpatched systems.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.1.3CPE matchmatch criteria
cpe:2.3:a:samba:rsync:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
6.34%
Probability of exploitation in next 30 days
EPSS Percentile
92.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0634 is in the 88th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (3)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: rsync
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: rsync
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: rsync

Vendor Advisories (1)

redhatCVE-2018-5764Moderate

rsync: sanitization bypass in parse_argument in options.c

Jan 17, 2018

References

download.samba.org / pub/rsync/src-previews/rsync-3.1.3pre1-NEWS
Release NotesVendor Advisory
git.samba.org / rsync.git
lists.debian.org / debian-lts-announce/2018/01/msg00021.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2019/03/msg00027.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2021/11/msg00028.html
Mailing ListThird Party Advisory
security.gentoo.org / glsa/201805-04
Third Party Advisory
usn.ubuntu.com / 3543-1
Third Party Advisory
securityfocus.com / bid/102803
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040276
Third Party AdvisoryVDB Entry