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Fencer Vulns
medium 6.5

CVE-2023-50495 json

NCurse v6.4-20230418 was discovered to contain a segmentation fault via the component _nc_wrap_entry().

published 2023-12-12 2 y ago modified 2026-10-15 25 d ago also EUVD-2023-55278

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 64%
public exploits
0
none known

Summary

NCurse v6.4-20230418 was discovered to contain a segmentation fault via the component _nc_wrap_entry().

Patch / fix

  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem V1.1
  • ncurses Debian 14, Debian 13 6.4+20230625-1

debian advisories DEBIAN-CVE-2023-50495

  • ncurses Ubuntu Pro 14.04 LTS 5.9+20140118-1ubuntu1+esm5
  • ncurses Ubuntu Pro 16.04 LTS 6.0+20160213-1ubuntu1+esm5
  • ncurses Ubuntu Pro 18.04 LTS 6.1-1ubuntu1.18.04.1+esm2

ubuntu advisories UBUNTU-CVE-2023-50495

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

  • ncurses SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 5.9-85.1
  • ncurses SLE Module for Legacy 15 SP5, SLE Module for Legacy 15 SP4, SLE Module for Development Tools 15 SP5 +12 more 6.1-150000.5.20.1

suse advisories SUSE-SU-2023:4892-1SUSE-SU-2023:4891-1

  • ncurses CBL-Mariner 2.0 6.4-3

azure linux advisories AZL-32177

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-2023-50495 updated cvss 6.5

ncurses: segmentation fault via _nc_wrap_entry()

  • Red Hat Enterprise Linux 6 ncurses, ncurses-base, ncurses-libs, ncurses-term Red Hat Enterprise Linux 7 ncurses, ncurses-base, ncurses-libs, ncurses-term
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 ncurses, ncurses-base, ncurses-libs, ncurses-term, ncurses-c++-libs, ncurses-compat-libs Red Hat Enterprise Linux 9 ncurses, ncurses-base, ncurses-libs, ncurses-term, ncurses-c++-libs
    affected: workaround, no fix available “Fix deferred”
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-core-bff-rhel9, rhoai/odh-dashboard-rhel9, rhoai/odh-mod-arch-maas-rhel9, rhoai/odh-mod-arch-automl-rhel9, rhoai/odh-mod-arch-gen-ai-rhel9, rhoai/odh-mod-arch-mlflow-rhel9, +6 more
    under investigation
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-mlflow-rhel9, rhoai/odh-kube-rbac-proxy-rhel9, rhoai/odh-maas-controller-rhel9, rhoai/odh-mlflow-operator-rhel9, rhoai/odh-model-controller-rhel9, rhoai/odh-ogx-k8s-operator-rhel9, +14 more
    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-23-166-11 updated cvss 6.5

Siemens SIMATIC S7-1500 TM MFP Linux Kernel

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
none
Automatable
no
Technical impact
partial
Assessed
23 mo ago

Exploit prediction

1.04% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

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.