CVE-2025-10158VulnerabilityPublished 1 Apr 2026Updated 16 Sep 2026

SUSE rsync · security update for rsync

Affects SUSE rsyncSource GCVE Database

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Not known to be exploited.

Data as of 30 Oct 2026, 11:52 UTC

Severity

Medium

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS: 0.3% chance of exploitation in 30 days – higher than 28% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

Disclosed: evidence found.
CVE published 1 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

bundesamt-f-r-sicherheit-in-de

What to do

Affected software

Product	Affected	Fixed in
Red Hatredhat/rsync`pkg:rpm/redhat/rsync`Other threats	Affected >=8.0.0 <=8.10 >=9.0.0 <=9.8	Fixed in–

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AI-suggested

Red Hat has released official updates for rsync in Red Hat Enterprise Linux 9 to fix this vulnerability. Users should apply the security update as described in Red Hat advisory RHSA-2026:6390. Details and instructions for applying the update are available at https://access.redhat.com/articles/11258. Applying this update will remediate the vulnerability. No additional mitigation steps are indicated by the vendor.

Description

The rsync utility enables the users to copy and synchronize files locally or across a network. Synchronization with rsync is fast because rsync only sends the differences in files over the network instead of sending whole files. The rsync utility is also used as a mirroring tool. Security Fix(es): * rsync: Rsync: Out of bounds array access via negative index (CVE-2025-10158) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Impact

The vulnerability allows out-of-bounds array access via a negative index in the rsync utility, which could cause memory corruption or crashes. This may impact the reliability and security of systems using rsync for file synchronization or mirroring. No known active exploitation has been reported, and the severity is rated moderate by Red Hat.

Summary

The rsync utility in Red Hat Enterprise Linux 9 contains a vulnerability identified as CVE-2025-10158, involving an out-of-bounds array access caused by a negative index. This vulnerability is classified under CWE-129 (Improper Validation of Array Index). The issue affects various builds of rsync across multiple architectures including x86_64, s390x, ppc64le, and aarch64. Red Hat has issued a security advisory (RHSA-2026:6390) providing updated packages that fix this flaw. The vulnerability could lead to memory corruption, but no known exploits are reported in the wild. The advisory rates the impact as moderate.

CWE-129Improper Validation of Array Index (opens in a new tab)
Variant weaknessLikelihood of exploit: HighOWASP Top 10 A05:2025: Injection (opens in a new tab)
The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.
Architecture and Design · Input Validation
Use an input validation framework such as Struts or the OWASP ESAPI Validation API. Note that using a framework does not automatically address all input validation problems; be mindful of weaknesses that could arise from misusing the framework itself (CWE-1173).
Architecture and Design
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks…
Requirements · Language Selection
Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
Injection Prevention (opens in a new tab)
SQL Injection Prevention (opens in a new tab)
Injection Prevention in Java (opens in a new tab)
OWASP ASVS 4.0.3
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
V5.1.3 (opens in a new tab)
Attack patterns
Overflow Buffers (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 12 Jul 2026, 10:45 UTC

WeaknessesCWE-129

Technical details

References

Community reviews

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