Detections
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RHEL 10 : glibc (RHSA-2026:33092)

critical Nessus Plugin ID 323868

Synopsis

The remote Red Hat host is missing a security update.

Description

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:33092 advisory.

 The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system.
 Without these libraries, the Linux system cannot function correctly.

 Security Fix(es):

 * glibc: glibc: Heap Buffer Overflow in `scanf` with `%mc` format specifier and large width (CVE-2026-5450)

 Bug Fix(es) and Enhancement(s):

 * Backport Zen5 IFUNC changes to prefer AVX512/EVEX?512 string implementations on RHEL 10 [rhel-10] (JIRA:RHEL-174869)

 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.

Solution

Update the affected packages.

See Also

https://access.redhat.com/errata/RHSA-2026:33092

https://access.redhat.com/security/updates/classification/#moderate

https://bugzilla.redhat.com/show_bug.cgi?id=2459853

http://www.nessus.org/u?98256efd

Plugin Details

Severity: Critical

ID: 323868

File Name: redhat-RHSA-2026-33092.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 6/30/2026

Updated: 6/30/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-5450

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:glibc-langpack-gl, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-so, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-vi, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ks, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-nb, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mhr, p-cpe:/a:redhat:enterprise_linux:glibc-utils, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-bg, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ug, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-kab, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-to, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-gez, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-os, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-chr, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-szl, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-nn, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ro, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-su, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ss, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sm, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-el, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-tr, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sl, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-zh, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-kw, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-bn, p-cpe:/a:redhat:enterprise_linux:nss_hesiod, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-iu, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-kn, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ce, p-cpe:/a:redhat:enterprise_linux:glibc-devel, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sat, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-bem, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sq, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-gbm, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-dv, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ve, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-cy, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sv, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-de, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ssy, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-th, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-wae, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-om, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-lij, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-gd, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-lb, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-bi, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sr, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-it, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-tpi, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-shs, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-kok, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-anp, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-nds, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-is, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-pa, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-pt, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ta, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-hy, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-am, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-fy, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ts, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-hi, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-eo, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-crh, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ha, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-dz, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sid, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-zgh, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ur, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-hif, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-niu, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-et, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-xh, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-fa, p-cpe:/a:redhat:enterprise_linux:glibc-nss-devel, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ia, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-fo, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sgs, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-az, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-af, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-br, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-bho, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-aa, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-hsb, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ayc, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-lv, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-uz, p-cpe:/a:redhat:enterprise_linux:glibc-common, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-dsb, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-cs, p-cpe:/a:redhat:enterprise_linux:nss_db, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-eu, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-kv, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ff, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-hak, p-cpe:/a:redhat:enterprise_linux:glibc, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-he, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-shn, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-nl, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-kk, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-tl, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ko, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-te, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ga, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-es, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ja, p-cpe:/a:redhat:enterprise_linux:glibc-gconv-extra, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-rw, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-si, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-or, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ti, p-cpe:/a:redhat:enterprise_linux:glibc-locale-source, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-wo, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-hu, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ne, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-fr, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-li, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-byn, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-gv, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-nr, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-hr, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mjw, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-kl, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-my, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-tn, p-cpe:/a:redhat:enterprise_linux:glibc-benchtests, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-bo, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-nan, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-pap, p-cpe:/a:redhat:enterprise_linux:glibc-static, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-agr, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ast, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ms, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-uk, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mag, cpe:/o:redhat:enterprise_linux:10.2, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ig, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-the, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ka, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-tcy, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-lo, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-zu, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ps, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-st, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ky, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-syr, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-doi, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-yuw, p-cpe:/a:redhat:enterprise_linux:glibc-all-langpacks, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-nhn, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-yo, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-be, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ak, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-an, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-raj, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-wal, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ln, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-tok, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-wa, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sk, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-yi, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sc, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mfe, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-tig, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-fi, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mnw, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mt, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ber, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mg, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ca, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-nso, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sw, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-tg, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-cmn, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-pl, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-id, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mn, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-miq, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mai, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sd, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-brx, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mr, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-lzh, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-fil, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mk, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-lt, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ml, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-hne, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-tt, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ku, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-cv, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-bs, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-oc, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-tk, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-csb, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-gu, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ik, p-cpe:/a:redhat:enterprise_linux:glibc-minimal-langpack, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sah, p-cpe:/a:redhat:enterprise_linux:glibc-doc, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-bhb, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ht, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-rif, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ckb, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-yue, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ru, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mni, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ar, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-lg, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-quz, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sa, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-da, p-cpe:/a:redhat:enterprise_linux:libnsl, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-se, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-en, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-km, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mi, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-fur, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-unm, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-as

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/30/2026

Vulnerability Publication Date: 4/20/2026

Reference Information

CVE: CVE-2026-5450

CWE: 131

RHSA: 2026:33092