# CVE-2026-43618: Rsync < 3.4.3 Integer Overflow Information Disclosure CVE-2026-43618 is fixed in 5 products on 1 platform, first by rsync 3.1.2-2.1ubuntu1.6+esm3, released May 19, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-43618 - Priority: High - CVSS: 8.1 (Important) - EPSS: 0.0078 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: May 19, 2026 - Weakness: Integer Overflow or Wraparound - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-43618 ## 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: Remote memory disclosure via integer overflow in compressed-token decoding (CVE-2026-43618) * rsync: TOCTOU symlink race condition allowing local privilege escalation in daemon mode without chroot. (CVE-2026-29518) 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. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | rsync Debian 12.15 (bookworm) | 3.2.7-1+deb12u5 | [DEBIAN-CVE-2026-43618](https://patchblox.com/security/data/fix/linux/debian-cve-2026-43618.md) | May 27, 2026 | | Linux | rsync Debian 13.5 (trixie) | 3.4.1+ds1-5+deb13u3 | [DEBIAN-CVE-2026-43618](https://patchblox.com/security/data/fix/linux/debian-cve-2026-43618.md) | May 27, 2026 | | Linux | rsync Debian 14 | 3.4.3+ds1-1 | [DEBIAN-CVE-2026-43618](https://patchblox.com/security/data/fix/linux/debian-cve-2026-43618.md) | May 27, 2026 | | Linux | rsync RHEL 10 | 3.4.4-1.el10_2 | [RHSA-2026:26332](https://patchblox.com/security/data/fix/linux/rhsa-2026-26332.md) | May 20, 2026 | | Linux | rsync RHEL 8 | 0:3.1.3-27.el8_10 | [RHSA-2026:26408](https://patchblox.com/security/data/fix/linux/rhsa-2026-26408.md) | Jun 24, 2026 | | Linux | rsync RHEL 9 | 0:3.2.5-7.el9_8.2 | [RHSA-2026:26410](https://patchblox.com/security/data/fix/linux/rhsa-2026-26410.md) | Jun 24, 2026 | | Linux | rsync Ubuntu 18.04.6 LTS (bionic) | 3.1.2-2.1ubuntu1.6+esm3 | [rsync 3.1.2-2.1ubuntu1.6+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-rsync-3.1.2-2.1ubuntu1.6-esm3.md) | May 19, 2026 | | Linux | rsync Ubuntu 20.04 LTS (focal) | 3.1.3-8ubuntu0.9+esm1 | [rsync 3.1.3-8ubuntu0.9+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-rsync-3.1.3-8ubuntu0.9-esm1.md) | May 19, 2026 | | Linux | rsync Ubuntu 22.04.1 LTS (jammy) | 3.2.7-0ubuntu0.22.04.6 | [rsync 3.2.7-0ubuntu0.22.04.6](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-rsync-3.2.7-0ubuntu0.22.04.6.md) | May 27, 2026 | | Linux | rsync Ubuntu 24.04.5 LTS (noble) | 3.2.7-1ubuntu1.4 | [rsync 3.2.7-1ubuntu1.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-rsync-3.2.7-1ubuntu1.4.md) | May 27, 2026 | | Linux | rsync Ubuntu 25.10 (questing) | 3.4.1+ds1-5ubuntu1.2 | [rsync 3.4.1+ds1-5ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-rsync-3.4.1-ds1-5ubuntu1.2.md) | May 27, 2026 | | Linux | rsync Ubuntu 26.04.1 LTS (resolute) | 3.4.1+ds1-7ubuntu0.2 | [rsync 3.4.1+ds1-7ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-rsync-3.4.1-ds1-7ubuntu0.2.md) | May 19, 2026 | | Linux | rsync almalinux 10 | 3.4.4-1.el10_2 | [ALSA-2026:26332](https://patchblox.com/security/data/fix/linux/alsa-2026-26332.md) | Jun 16, 2026 | | Linux | rsync almalinux 8 | 3.1.3-27.el8_10 | [ALSA-2026:26408](https://patchblox.com/security/data/fix/linux/alsa-2026-26408.md) | Jun 16, 2026 | | Linux | rsync almalinux 9 | 3.2.5-7.el9_8.2 | [ALSA-2026:26410](https://patchblox.com/security/data/fix/linux/alsa-2026-26410.md) | Jun 16, 2026 | | Linux | rsync amzn 2023 | 3.4.0-1.amzn2023.0.4 | [ALAS2023-2026-1801](https://patchblox.com/security/data/fix/linux/alas2023-2026-1801.md) | Jun 8, 2026 | | Linux | rsync ol 10 | 0:3.4.4-1.el10_2 | [ELSA-2026-26332](https://patchblox.com/security/data/fix/linux/elsa-2026-26332.md) | Jul 16, 2026 | | Linux | rsync ol 8 | 0:3.1.3-27.el8_10 | [ELSA-2026-26408](https://patchblox.com/security/data/fix/linux/elsa-2026-26408.md) | Jun 16, 2026 | | Linux | rsync ol 9 | 0:3.2.5-7.el9_8.2 | [ELSA-2026-26410](https://patchblox.com/security/data/fix/linux/elsa-2026-26410.md) | Jun 23, 2026 | | Linux | rsync opensuse-leap 16.0 | 3.4.1-160000.6.1 | [OPENSUSE-SU-2026:21650-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21650-1.md) | Aug 26, 2026 | | Linux | rsync rocky 10 | 0:3.4.4-1.el10_2 | [RLSA-2026:26332](https://patchblox.com/security/data/fix/linux/rlsa-2026-26332.md) | Jun 19, 2026 | | Linux | rsync rocky 8 | 0:3.1.3-27.el8_10 | [RLSA-2026:26408](https://patchblox.com/security/data/fix/linux/rlsa-2026-26408.md) | Jun 17, 2026 | | Linux | rsync rocky 9 | 0:3.2.5-7.el9_8.2 | [RLSA-2026:26410](https://patchblox.com/security/data/fix/linux/rlsa-2026-26410.md) | Jun 17, 2026 | | Linux | rsync sles 16.0 | 3.4.1-160000.6.1 | [SUSE-SU-2026:23323-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23323-1.md) | Aug 26, 2026 | | Linux | rsync-daemon RHEL 8 | 0:3.1.3-27.el8_10 | [RHSA-2026:26408](https://patchblox.com/security/data/fix/linux/rhsa-2026-26408.md) | Jun 24, 2026 | | Linux | rsync-daemon RHEL 9 | 0:3.2.5-7.el9_8.2 | [RHSA-2026:26410](https://patchblox.com/security/data/fix/linux/rhsa-2026-26410.md) | Jun 24, 2026 | | Linux | rsync-daemon almalinux 10 | 3.4.4-1.el10_2 | [ALSA-2026:26332](https://patchblox.com/security/data/fix/linux/alsa-2026-26332.md) | Jun 16, 2026 | | Linux | rsync-daemon almalinux 8 | 3.1.3-27.el8_10 | [ALSA-2026:26408](https://patchblox.com/security/data/fix/linux/alsa-2026-26408.md) | Jun 16, 2026 | | Linux | rsync-daemon almalinux 9 | 3.2.5-7.el9_8.2 | [ALSA-2026:26410](https://patchblox.com/security/data/fix/linux/alsa-2026-26410.md) | Jun 16, 2026 | | Linux | rsync-daemon amzn 2023 | 3.4.0-1.amzn2023.0.4 | [ALAS2023-2026-1801](https://patchblox.com/security/data/fix/linux/alas2023-2026-1801.md) | Jun 8, 2026 | | Linux | rsync-daemon ol 10 | 0:3.4.4-1.el10_2 | [ELSA-2026-26332](https://patchblox.com/security/data/fix/linux/elsa-2026-26332.md) | Jul 16, 2026 | | Linux | rsync-daemon ol 8 | 0:3.1.3-27.el8_10 | [ELSA-2026-26408](https://patchblox.com/security/data/fix/linux/elsa-2026-26408.md) | Jun 16, 2026 | | Linux | rsync-daemon ol 9 | 0:3.2.5-7.el9_8.2 | [ELSA-2026-26410](https://patchblox.com/security/data/fix/linux/elsa-2026-26410.md) | Jun 23, 2026 | | Linux | rsync-debuginfo amzn 2023 | 3.4.0-1.amzn2023.0.4 | [ALAS2023-2026-1801](https://patchblox.com/security/data/fix/linux/alas2023-2026-1801.md) | Jun 8, 2026 | | Linux | rsync-debugsource amzn 2023 | 3.4.0-1.amzn2023.0.4 | [ALAS2023-2026-1801](https://patchblox.com/security/data/fix/linux/alas2023-2026-1801.md) | Jun 8, 2026 | | Linux | rsync-rrsync RHEL 9 | 0:3.2.5-7.el9_8.2 | [RHSA-2026:26410](https://patchblox.com/security/data/fix/linux/rhsa-2026-26410.md) | Jun 24, 2026 | | Linux | rsync-rrsync almalinux 10 | 3.4.4-1.el10_2 | [ALSA-2026:26332](https://patchblox.com/security/data/fix/linux/alsa-2026-26332.md) | Jun 16, 2026 | | Linux | rsync-rrsync almalinux 9 | 3.2.5-7.el9_8.2 | [ALSA-2026:26410](https://patchblox.com/security/data/fix/linux/alsa-2026-26410.md) | Jun 16, 2026 | | Linux | rsync-rrsync ol 10 | 0:3.4.4-1.el10_2 | [ELSA-2026-26332](https://patchblox.com/security/data/fix/linux/elsa-2026-26332.md) | Jul 16, 2026 | | Linux | rsync-rrsync ol 9 | 0:3.2.5-7.el9_8.2 | [ELSA-2026-26410](https://patchblox.com/security/data/fix/linux/elsa-2026-26410.md) | Jun 23, 2026 | --- Data as of 2026-11-08T19:12:23Z UTC. 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