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Fencer Vulns
medium 6.2

CVE-2025-0395 json

When the assert() function in the GNU C Library versions 2.13 to 2.40 fails, it does not allocate enough space for the assertion failure me…

published 2025-01-22 21 mo ago modified 2026-10-15 25 d ago also EUVD-2025-1642

cvss
6.2
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 29%
public exploits
0
none known

Summary

When the assert() function in the GNU C Library versions 2.13 to 2.40 fails, it does not allocate enough space for the assertion failure message string and size information, which may lead to a buffer overflow if the message string size aligns to page size.

Patch / fix

  • Siemens RUGGEDCOM ROX MX5000 V2.17.1
  • Siemens RUGGEDCOM ROX MX5000RE V2.17.1
  • Siemens RUGGEDCOM ROX RX1400 V2.17.1
  • Siemens RUGGEDCOM ROX RX1500 V2.17.1
  • Siemens RUGGEDCOM ROX RX1501 V2.17.1
  • Siemens RUGGEDCOM ROX RX1510 V2.17.1
  • Siemens RUGGEDCOM ROX RX1511 V2.17.1
  • Siemens RUGGEDCOM ROX RX1512 V2.17.1
  • Siemens RUGGEDCOM ROX RX1524 V2.17.1
  • Siemens RUGGEDCOM ROX RX1536 V2.17.1
  • Siemens RUGGEDCOM ROX RX5000 V2.17.1
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.5
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • glibc Debian 12 2.36-9+deb12u10
  • glibc Debian 14, Debian 13 2.40-6

debian advisories DEBIAN-CVE-2025-0395

  • glibc Ubuntu 20.04 LTS 2.31-0ubuntu9.17
  • glibc Ubuntu 22.04 LTS 2.35-0ubuntu3.9
  • glibc Ubuntu 24.04 LTS 2.39-0ubuntu8.4
  • glibc Ubuntu Pro 16.04 LTS 2.23-0ubuntu11.3+esm8
  • glibc Ubuntu Pro 18.04 LTS 2.27-3ubuntu1.6+esm4
  • eglibc Ubuntu Pro 14.04 LTS 2.19-0ubuntu6.15+esm4

ubuntu advisories UBUNTU-CVE-2025-0395

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • glibc RHEL 9 2.34-125.el9_5.8
  • nscd RHEL 9 2.34-125.el9_5.8
  • libnsl RHEL 9 2.34-125.el9_5.8
  • nss_db RHEL 9 2.34-125.el9_5.8
  • nss_hesiod RHEL 9 2.34-125.el9_5.8
  • glibc-utils RHEL 9 2.34-125.el9_5.8
  • glibc-common RHEL 9 2.34-125.el9_5.8
  • glibc-benchtests RHEL 9 2.34-125.el9_5.8

red hat advisories RHSA-2025:4244RHSA-2025:4243RHSA-2025:4242RHSA-2025:4241RHSA-2025:3828

  • glibc SLES 16.0, Linux Micro Extras 6.2, Linux Micro 6.2 +1 more 2.40-160000.3.1
  • glibc Linux Micro 6.1 2.38-slfo.1.1_3.1
  • glibc Linux Micro 6.0 2.38-8.1
  • glibc SLE Module for Development Tools 15 SP6, SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 2.38-150600.14.23.1
  • glibc SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES for SAP 15 SP3 +16 more 2.31-150300.92.1
  • glibc SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 2.22-114.40.1

suse advisories SUSE-SU-2026:20178-1SUSE-SU-2026:20198-1SUSE-SU-2026:20563-1SUSE-SU-2025:20236-1SUSE-SU-2025:20135-1SUSE-SU-2025:0582-1

  • glibc openSUSE Leap 16.0 2.40-160000.3.1
  • glibc-cross-s390x-src openSUSE Leap 16.0 2.40-160000.3.1
  • glibc-cross-aarch64-src openSUSE Leap 16.0 2.40-160000.3.1
  • glibc-cross-ppc64le-src openSUSE Leap 16.0 2.40-160000.3.1
  • glibc-cross-riscv64-src openSUSE Leap 16.0 2.40-160000.3.1
  • glibc openSUSE Tumbleweed 2.41-1.1

opensuse advisories openSUSE-SU-2026:20133-1openSUSE-SU-2025:14851-1

  • glibc AlmaLinux 9 2.34-125.el9_5.8.alma.1
  • nscd AlmaLinux 9 2.34-125.el9_5.8.alma.1
  • libnsl AlmaLinux 9 2.34-125.el9_5.8.alma.1
  • nss_db AlmaLinux 9 2.34-125.el9_5.8.alma.1
  • nss_hesiod AlmaLinux 9 2.34-125.el9_5.8.alma.1
  • glibc-utils AlmaLinux 9 2.34-125.el9_5.8.alma.1
  • glibc-common AlmaLinux 9 2.34-125.el9_5.8.alma.1
  • glibc-benchtests AlmaLinux 9 2.34-125.el9_5.8.alma.1

almalinux advisories ALSA-2025:4244ALSA-2025:3828

  • glibc Rocky Linux 9 2.34-125.el9_5.8
  • glibc Rocky Linux 8 2.28-251.el8_10.16

rocky linux advisories RLSA-2025:4244RLSA-2025:3828

  • glibc CBL-Mariner 2.0 2.35-9
  • glibc Azure Linux 3.0 2.38-11

azure linux advisories AZL-55937AZL-55965

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-0395 updated cvss 5.5

glibc: buffer overflow in the GNU C Library's assert()

  • Red Hat Enterprise Linux 6 nscd, glibc, glibc-utils, compat-glibc, glibc-common Red Hat Enterprise Linux 7 nscd, glibc, glibc-utils, compat-glibc, glibc-common
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-9
    affected: workaround, no fix available “Fix deferred”
  • Red Hat build of Keycloak 26.2 rhbk/keycloak-rhel9 26.2-3, rhbk/keycloak-rhel9-operator 26.2-3, rhbk/keycloak-operator-bundle 26.2.4-2
    fixed: vendor fix RHBA-2025:7639
  • Red Hat CodeReady Linux Builder (v. 9) nss_db 2.34-125.el9_5.8, nss_hesiod 2.34-125.el9_5.8, glibc-benchtests 2.34-125.el9_5.8
    fixed: vendor fix RHSA-2025:4244
  • Red Hat CodeReady Linux Builder EUS (v.9.2) nss_db 2.34-60.el9_2.17, nss_hesiod 2.34-60.el9_2.17, glibc-benchtests 2.34-60.el9_2.17
    fixed: vendor fix RHSA-2025:4241
  • Red Hat CodeReady Linux Builder EUS (v.9.4) nss_db 2.34-100.el9_4.10, nss_hesiod 2.34-100.el9_4.10, glibc-benchtests 2.34-100.el9_4.10
    fixed: vendor fix RHSA-2025:4243
  • Red Hat Enterprise Linux AppStream (v. 8) glibc-utils 2.28-251.el8_10.16, compat-libpthread-nonshared 2.28-251.el8_10.16
    fixed: vendor fix RHSA-2025:3828
  • Red Hat Enterprise Linux AppStream (v. 9) glibc-utils 2.34-125.el9_5.8, glibc-locale-source 2.34-125.el9_5.8
    fixed: vendor fix RHSA-2025:4244
show 10 more
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) glibc-utils 2.34-28.el9_0.8, glibc-locale-source 2.34-28.el9_0.8
    fixed: vendor fix RHSA-2025:4242
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) glibc-utils 2.34-60.el9_2.17, glibc-locale-source 2.34-60.el9_2.17
    fixed: vendor fix RHSA-2025:4241
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) glibc-utils 2.34-100.el9_4.10, glibc-locale-source 2.34-100.el9_4.10
    fixed: vendor fix RHSA-2025:4243
  • Red Hat Enterprise Linux BaseOS (v. 8) nscd 2.28-251.el8_10.16, glibc 2.28-251.el8_10.16, libnsl 2.28-251.el8_10.16, nss_db 2.28-251.el8_10.16, glibc-common 2.28-251.el8_10.16, glibc-gconv-extra 2.28-251.el8_10.16, +3 more
    fixed: vendor fix RHSA-2025:3828
  • Red Hat Enterprise Linux BaseOS (v. 9) nscd 2.34-125.el9_5.8, glibc 2.34-125.el9_5.8, libnsl 2.34-125.el9_5.8, glibc-common 2.34-125.el9_5.8, glibc-gconv-extra 2.34-125.el9_5.8, glibc-all-langpacks 2.34-125.el9_5.8, +1 more
    fixed: vendor fix RHSA-2025:4244
  • Red Hat Enterprise Linux BaseOS E4S (v.9.0) nscd 2.34-28.el9_0.8, glibc 2.34-28.el9_0.8, libnsl 2.34-28.el9_0.8, glibc-common 2.34-28.el9_0.8, glibc-gconv-extra 2.34-28.el9_0.8, glibc-all-langpacks 2.34-28.el9_0.8, +1 more
    fixed: vendor fix RHSA-2025:4242
  • Red Hat Enterprise Linux BaseOS EUS (v.9.2) nscd 2.34-60.el9_2.17, glibc 2.34-60.el9_2.17, libnsl 2.34-60.el9_2.17, glibc-common 2.34-60.el9_2.17, glibc-gconv-extra 2.34-60.el9_2.17, glibc-all-langpacks 2.34-60.el9_2.17, +1 more
    fixed: vendor fix RHSA-2025:4241
  • Red Hat Enterprise Linux BaseOS EUS (v.9.4) nscd 2.34-100.el9_4.10, glibc 2.34-100.el9_4.10, libnsl 2.34-100.el9_4.10, glibc-common 2.34-100.el9_4.10, glibc-gconv-extra 2.34-100.el9_4.10, glibc-all-langpacks 2.34-100.el9_4.10, +1 more
    fixed: vendor fix RHSA-2025:4243
  • Red Hat Enterprise Linux CRB (v. 8) nss_hesiod 2.28-251.el8_10.16, glibc-benchtests 2.28-251.el8_10.16
    fixed: vendor fix RHSA-2025:3828
  • Red Hat Enterprise Linux 10 glibc
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-26-134-16 updated cvss 6.2

Siemens Ruggedcom Rox

  • Siemens RUGGEDCOM ROX MX5000 < 2.17.1 Siemens RUGGEDCOM ROX MX5000RE < 2.17.1 Siemens RUGGEDCOM ROX RX1400 < 2.17.1 Siemens RUGGEDCOM ROX RX1500 < 2.17.1 Siemens RUGGEDCOM ROX RX1501 < 2.17.1 Siemens RUGGEDCOM ROX RX1510 < 2.17.1
    +5 more products
    Siemens RUGGEDCOM ROX RX1511 < 2.17.1 Siemens RUGGEDCOM ROX RX1512 < 2.17.1 Siemens RUGGEDCOM ROX RX1524 < 2.17.1 Siemens RUGGEDCOM ROX RX1536 < 2.17.1 Siemens RUGGEDCOM ROX RX5000 < 2.17.1
    affected: fixed in V2.17.1 support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
9 mo ago

Exploit prediction

0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • The GNU C Library glibc
  • Siemens RUGGEDCOM ROX MX5000
  • Siemens RUGGEDCOM ROX MX5000RE
  • Siemens RUGGEDCOM ROX RX1400
  • Siemens RUGGEDCOM ROX RX1500
  • Siemens RUGGEDCOM ROX RX1501
  • Siemens RUGGEDCOM ROX RX1510
  • Siemens RUGGEDCOM ROX RX1511
  • Siemens RUGGEDCOM ROX RX1512
  • Siemens RUGGEDCOM ROX RX1524
  • Siemens RUGGEDCOM ROX RX1536
  • Siemens RUGGEDCOM ROX RX5000
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

Classification

Weakness
  • CWE-131 Incorrect Calculation of Buffer Size

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.