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Vulnerability record · CVE-2026-41035 · published 16 April 2026

CVE-2026-41035: Samba rsync vulnerability

Samba · Rsync

In rsync 3.0.1 through 3.4.1, receive_xattr relies on an untrusted length value during a qsort call, leading to a receiver use-after-free. The victim must run rsync with -X (aka --xattrs). On Linux, many (but not all) common configurations are vulnerable. Non-Linux platforms are more widely vulnerable.

7.8 CVSS 3.1 High EPSS 0.49% · top 60.1% CWE-130 · CWE-130CWE-805 · CWE-805
7.8CVSS 3.1 base score
0.49%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
30References, 1 tagged exploit
4 Sep 2026Last modified by NVD

Description

In rsync 3.0.1 through 3.4.1, receive_xattr relies on an untrusted length value during a qsort call, leading to a receiver use-after-free. The victim must run rsync with -X (aka --xattrs). On Linux, many (but not all) common configurations are vulnerable. Non-Linux platforms are more widely vulnerable.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/RsyncProject/rsync/issues/871 Issue Tracking
https://github.com/RsyncProject/rsync/releases Release Notes
https://www.openwall.com/lists/oss-security/2026/04/16/2 ExploitMailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2026/04/16/9 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2026/04/22/3 Mailing ListThird Party Advisory
https://access.redhat.com/errata/RHSA-2026:17481
https://access.redhat.com/errata/RHSA-2026:19152
https://access.redhat.com/errata/RHSA-2026:19368
https://access.redhat.com/errata/RHSA-2026:20601
https://access.redhat.com/errata/RHSA-2026:20602
https://access.redhat.com/errata/RHSA-2026:20603
https://access.redhat.com/errata/RHSA-2026:20604
https://access.redhat.com/errata/RHSA-2026:20696
https://access.redhat.com/errata/RHSA-2026:23233
https://access.redhat.com/errata/RHSA-2026:23245
https://access.redhat.com/errata/RHSA-2026:25044
https://access.redhat.com/errata/RHSA-2026:25149
https://access.redhat.com/errata/RHSA-2026:25170
https://access.redhat.com/errata/RHSA-2026:25172
https://access.redhat.com/errata/RHSA-2026:25173
https://access.redhat.com/errata/RHSA-2026:25181
https://access.redhat.com/errata/RHSA-2026:25190
https://access.redhat.com/errata/RHSA-2026:26542
https://access.redhat.com/errata/RHSA-2026:28887
https://access.redhat.com/errata/RHSA-2026:29197
https://access.redhat.com/errata/RHSA-2026:34098
https://access.redhat.com/errata/RHSA-2026:59831
https://access.redhat.com/security/cve/CVE-2026-41035
https://bugzilla.redhat.com/show_bug.cgi?id=2458898
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41035.json

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2024-12084rsync daemon heap buffer overflow via attacker-controlled checksum lengthThe rsync daemon mishandles attacker-controlled checksum lengths (s2length), allowing an out-of-bounds write in the sum2 buffer when MAX_DIGEST_LEN e…EPSS 72%analysed9.8CVE-2017-17434Samba rsync vulnerabilityThe daemon in rsync 3.1.2, and 3.1.3-development before 2017-12-03, does not check for fnamecmp filenames in the daemon_filter_list data structure (i…EPSS 3.3%9.8CVE-2017-16548Samba rsync out-of-bounds read vulnerabilityThe receive_xattr function in xattrs.c in rsync 3.1.2 and 3.1.3-development does not check for a trailing '\0' character in an xattr name, which allo…EPSS 5.8%9.8CVE-2017-15994Samba rsync vulnerabilityrsync 3.1.3-development before 2017-10-24 mishandles archaic checksums, which makes it easier for remote attackers to bypass intended access restrict…EPSS 1.0%9.1CVE-2026-53791Samba rsync authentication bypass by spoofing vulnerabilityrsync daemon before 3.5.0 contains an IP address spoofing vulnerability that allows unauthenticated remote attackers to bypass IP-based access contro…EPSS 0.71%8.8CVE-2026-70461Samba rsync out-of-bounds write vulnerabilityrsync 3.2.5 before 3.5.0 contains a heap out-of-bounds write vulnerability that allows remote unauthenticated attackers to write one attacker-control…EPSS 0.79%8.7CVE-2026-70455Samba rsync allocation without limits vulnerabilityrsync 3.4.2 before 3.5.0 contains a denial of service vulnerability that allows a remote sender to exhaust system resources by specifying the --zt sh…EPSS 0.78%8.6CVE-2026-70463Samba rsync incorrect authorization vulnerabilityrsync 3.1.0 before 3.5.0 contains an authorization bypass in auth users directive parsing. The auth users parser uses comma-only tokenization when sp…EPSS 0.47%

Source: NIST National Vulnerability Database (record CVE-2026-41035), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.