Detections
Analytics
RHEL 10 : glibc (RHSA-2026:98599)
medium Nessus Plugin ID 379026
Synopsis
The remote Red Hat host is missing one or more security updates for glibc.Description
The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:98599 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: Privilege escalation and arbitrary code execution via TOCTOU race condition in dynamic loader (CVE-2026-86805)
* glibc: glibc: Local attacker can cause denial of service and information disclosure via stack-based buffer overflow. (CVE-2026-95818)
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 these issues but has instead relied only on the application's self-reported version number.
Solution
Update the RHEL glibc package based on the guidance in RHSA-2026:98599.See Also
https://access.redhat.com/errata/RHSA-2026:98599
https://access.redhat.com/security/updates/classification/#moderate
https://bugzilla.redhat.com/show_bug.cgi?id=2538209
Plugin Details
Severity: Medium
ID: 379026
File Name: redhat-RHSA-2026-98599.nasl
Version: 1.2
Type: Local
Agent: unix
Family: Red Hat Local Security Checks
Published: 11/11/2026
Updated: 11/12/2026
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: 4.5
Percentile: 57.76
Vendor
Vendor Severity: Moderate
CVSS v2
Risk Factor: Medium
Base Score: 5.7
Temporal Score: 4.2
Vector: CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:P
CVSS Score Source: CVE-2026-86805
CVSS v3
Risk Factor: Medium
Base Score: 6.3
Temporal Score: 5.5
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:L
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:redhat:enterprise_linux:10.3, p-cpe:/a:redhat:enterprise_linux:glibc-all-langpacks, p-cpe:/a:redhat:enterprise_linux:glibc-benchtests, p-cpe:/a:redhat:enterprise_linux:glibc-common, p-cpe:/a:redhat:enterprise_linux:glibc-devel, p-cpe:/a:redhat:enterprise_linux:glibc-doc, p-cpe:/a:redhat:enterprise_linux:glibc-gconv-extra, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-aa, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-af, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-agr, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ak, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-am, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-an, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-anp, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ar, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-as, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ast, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ayc, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-az, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-be, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-bem, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ber, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-bg, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-bhb, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-bho, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-bi, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-bn, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-bo, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-br, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-brx, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-bs, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-byn, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ca, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ce, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-chr, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ckb, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-cmn, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-crh, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-cs, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-csb, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-cv, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-cy, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-da, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-de, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-doi, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-dsb, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-dv, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-dz, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-el, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-en, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-eo, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-es, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-et, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-eu, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-fa, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ff, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-fi, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-fil, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-fo, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-fr, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-fur, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-fy, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ga, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-gbm, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-gd, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-gez, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-gl, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-gu, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-gv, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ha, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-hak, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-he, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-hi, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-hif, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-hne, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-hr, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-hsb, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ht, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-hu, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-hy, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ia, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-id, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ig, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ik, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-is, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-it, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-iu, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ja, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ka, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-kab, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-kk, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-kl, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-km, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-kn, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ko, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-kok, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ks, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ku, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-kv, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-kw, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ky, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-lb, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-lg, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-li, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-lij, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ln, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-lo, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-lt, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-lv, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-lzh, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mag, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mai, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mfe, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mg, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mhr, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mi, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-miq, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mjw, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mk, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ml, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mn, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mni, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mnw, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mr, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ms, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-mt, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-my, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-nan, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-nb, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-nds, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ne, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-nhn, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-niu, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-nl, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-nn, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-nr, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-nso, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-oc, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-om, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-or, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-os, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-pa, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-pap, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-pl, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ps, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-pt, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-quz, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-raj, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-rif, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ro, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ru, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-rw, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sa, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sah, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sat, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sc, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sd, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-se, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sgs, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-shn, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-shs, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-si, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sid, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sk, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sl, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sm, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-so, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sq, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sr, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ss, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ssy, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-st, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-su, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sv, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-sw, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-syr, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-szl, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ta, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-tcy, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-te, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-tg, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-th, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-the, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ti, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-tig, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-tk, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-tl, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-tn, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-to, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-tok, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-tpi, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-tr, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ts, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-tt, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ug, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-uk, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-unm, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ur, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-uz, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-ve, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-vi, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-wa, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-wae, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-wal, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-wo, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-xh, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-yi, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-yo, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-yue, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-yuw, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-zgh, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-zh, p-cpe:/a:redhat:enterprise_linux:glibc-langpack-zu, p-cpe:/a:redhat:enterprise_linux:glibc-locale-source, p-cpe:/a:redhat:enterprise_linux:glibc-minimal-langpack, p-cpe:/a:redhat:enterprise_linux:glibc-nss-devel, p-cpe:/a:redhat:enterprise_linux:glibc-static, p-cpe:/a:redhat:enterprise_linux:glibc-utils, p-cpe:/a:redhat:enterprise_linux:glibc, p-cpe:/a:redhat:enterprise_linux:libnsl, p-cpe:/a:redhat:enterprise_linux:nss_db, p-cpe:/a:redhat:enterprise_linux:nss_hesiod
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 11/11/2026
Vulnerability Publication Date: 8/27/2026
Reference Information
CVE: CVE-2026-86805, CVE-2026-95818
RHSA: 2026:98599