The remote RockyLinux 9 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:27862 advisory.

    * memcached: memcached: Username enumeration via timing side channel (CVE-2026-47783)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 10 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-27842 advisory.

    - Fix timing side-channel in SASL password database authentication       (CVE-2026-47783)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

An update of the memcached package has been released.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In memcached before 1.6.42, username data for SASL password database authentication has a timing side     channel because a loop exits as soon as a valid username is found by sasl_server_userdb_checkpass.
    (CVE-2026-47783)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2292-1 advisory.

    This update for memcached fixes the following issues

    - CVE-2026-47783: timing side-channel in SASL password database authentication (username) (bsc#1265873).
    - CVE-2026-47784: timing side-channel in SASL password database authentication (password) (bsc#1265881).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:27842 advisory.

    memcached is a high-performance, distributed memory object caching system, generic in nature, but intended     for use in speeding up dynamic web applications by alleviating database load.

    Security Fix(es):

    * memcached: memcached: Username enumeration via timing side channel (CVE-2026-47783)

    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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 10 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:27842 advisory.

    * memcached: memcached: Username enumeration via timing side channel (CVE-2026-47783)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote MiracleLinux 9 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2026-1361:01 advisory.

    * memcached: memcached: Username enumeration via timing side channel (CVE-2026-47783)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 11 host has a package installed that is affected by multiple vulnerabilities as referenced in the dla-4601 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-4601-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                           Chris Lamb     May 26, 2026                                  https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : memcached     Version        : 1.6.9+dfsg-1+deb11u1     CVE IDs        : CVE-2026-47783 CVE-2026-47784     Debian Bug     : 1137214

    It was discovered that there were two side-channel attacks in     memcached, the popular in-memory key/value database store. This could     have been used to reveal or extract information about authentication     details.

    For Debian 11 bullseye, these problems have been fixed in version     1.6.9+dfsg-1+deb11u1.

    We recommend that you upgrade your memcached packages.

    For the detailed security status of memcached please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/memcached

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1781 advisory.

    In memcached before 1.6.42, username data for SASL password database authentication has a timing side     channel because a loop exits as soon as a valid username is found by sasl_server_userdb_checkpass.
    (CVE-2026-47783)

    In memcached before 1.6.42, password data for SASL password database authentication has a timing side     channel because memcmp is used by sasl_server_userdb_checkpass. (CVE-2026-47784)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
322539	RockyLinux 9 : memcached (RLSA-2026:27862)	Nessus	Rocky Linux Local Security Checks	2026/6/24	2026/6/24	high
327533	Oracle Linux 10 : memcached (ELSA-2026-27842)	Nessus	Oracle Linux Local Security Checks	2026/7/17	2026/7/17	high
332329	Photon OS 5.0: Memcached PHSA-2026-5.0-92-0904	Nessus	PhotonOS Local Security Checks	2026/8/5	2026/8/5	high
315754	Linux Distros Unpatched Vulnerability : CVE-2026-47783	Nessus	Misc.	2026/5/20	2026/8/10	high
321068	SUSE SLES12 Security Update : memcached (SUSE-SU-2026:2292-1)	Nessus	SuSE Local Security Checks	2026/6/14	2026/6/14	high
321965	RHEL 10 : memcached (RHSA-2026:27842)	Nessus	Red Hat Local Security Checks	2026/6/22	2026/6/22	high
322280	AlmaLinux 10 : memcached (ALSA-2026:27842)	Nessus	Alma Linux Local Security Checks	2026/6/24	2026/6/24	high
330307	MiracleLinux 9 : memcached-1.6.9-7.el9_8.1 (AXSA:2026-1361:01)	Nessus	Miracle Linux Local Security Checks	2026/7/28	2026/7/28	high
316829	Debian dla-4601 : memcached - security update	Nessus	Debian Local Security Checks	2026/5/26	2026/5/26	high
319765	Amazon Linux 2023 : memcached, memcached-devel, memcached-selinux (ALAS2023-2026-1781)	Nessus	Amazon Linux Local Security Checks	2026/6/8	2026/6/8	high

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