CVE-2025-10158: rsync Improper Validation of Array Index
CVSS: 4.3v3.1MediumDeferred
AliasesALPINE-CVE-2025-10158MGASA-2026-0048SUSE-SU-2025:4511-1SUSE-SU-2026:0005-1SUSE-SU-2026:0041-1SUSE-SU-2026:0069-1SUSE-SU-2026:20044-1SUSE-SU-2026:20058-1RHSA-2026:6390RHSA-2026:6436RHSA-2026:6825UBUNTU-CVE-2025-10158DEBIAN-CVE-2025-10158openSUSE-SU-2025:15827-1
Published 18-11-2025Last modified 19-11-2025
Vulnerability summary
CVE-2025-10158 is a medium (CVSS 4.3) Improper Validation of Array Index vulnerability in rsync. EPSS estimates a 0.35% chance of exploitation in the next 30 days, higher than 27% of scored vulnerabilities.
CVSS score
4.3/10
010
Medium · v3.1 (CVE.org)EPSS score
0.35%
0%100%
Low · +0.02 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 5 · Related 5Timeline
- 18-11-2025PublishedVulnerability first disclosed.
- 19-11-2025Last modifiedVulnerability information updated.
Description
A malicious client acting as the receiver of an rsync file transfer can trigger an out of bounds read of a heap based buffer, via a negative array index. The malicious rsync client requires at least read access to the remote rsync module in order to trigger the issue.
CVSS metrics
6 scores · 6 sources · 1 versionMedium 4.3Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NSourcesAll 6 agree
- OSV · AlpineEcosystem advisory · calculated4.3MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- OSV · Red hatEcosystem advisory · calculated4.3MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- OSV · UbuntuEcosystem advisory · calculated4.3MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- OSV · DebianEcosystem advisory · calculated4.3MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- NVDNIST4.3MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
EPSS trend
Probability
0.35%
Chance of exploitation in the next 30 days
Percentile
27%
Versus all other CVEs
30-day change
+0.02 pp
From 0.33% on 19-09-2026
19-09-202619-10-2026
EPSS score0.35%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Suse8 products
- rsync&distro=SUSE Linux Enterprise Micro 5.2< 3.2.3-150000.4.39.1
- rsync&distro=SUSE Linux Enterprise Micro 5.3< 3.2.3-150400.3.26.1
- rsync&distro=SUSE Linux Enterprise Micro 5.4< 3.2.3-150400.3.26.1
- rsync&distro=SUSE Linux Enterprise Micro 5.5< 3.2.3-150400.3.26.1
- rsync&distro=SUSE Linux Enterprise Module for Basesystem 15 SP7< 3.2.7-150600.3.14.1
Redhat5 products
- rsync< 0:3.2.5-3.el9_7.2 | < 0:3.1.3-24.el8_10 | < 0:3.4.1-2.el10_1.2
- rsync-daemon< 0:3.2.5-3.el9_7.2 | < 0:3.1.3-24.el8_10 | < 0:3.4.1-2.el10_1.2
- rsync-debuginfo< 0:3.2.5-3.el9_7.2 | < 0:3.1.3-24.el8_10 | < 0:3.4.1-2.el10_1.2
- rsync-debugsource< 0:3.2.5-3.el9_7.2 | < 0:3.1.3-24.el8_10 | < 0:3.4.1-2.el10_1.2
- rsync-rrsync< 0:3.2.5-3.el9_7.2 | < 0:3.4.1-2.el10_1.2
Opensuse2 products
- rsync&distro=openSUSE Leap 15.6< 3.2.7-150600.3.14.1
- rsync&distro=openSUSE Tumbleweed< 3.4.1-4.1
Alpine1 product
- rsync< 3.4.1-r1
Debian1 product
- rsync< 3.2.7-1+deb12u4 | < 3.4.1+ds1-5+deb13u1 | < 3.4.1+ds1-7
Mageia1 product
- rsync< 3.2.7-1.3.mga9
Rsync1 product
- rsync≤ 3.4.1
Ubuntu1 product
- rsync< 3.1.0-2ubuntu0.4+esm3 | < 3.1.1-3ubuntu1.3+esm5 | < 3.1.2-2.1ubuntu1.6+esm3 | < 3.1.3-8ubuntu0.9+esm1 | < 3.2.7-0ubuntu0.22.04.6 | < 3.2.7-1ubuntu1.4 | < 3.4.1+ds1-5ubuntu1.2 | < 3.4.1+ds1-7
8 vendors · 20 products
