Linux Distros Unpatched Vulnerability : CVE-2021-39537

high Nessus Plugin ID 260330

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

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

- An issue was discovered in ncurses through v6.2-1. _nc_captoinfo in captoinfo.c has a heap-based buffer overflow. (CVE-2021-39537)

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

Solution

There is no known solution at this time.

Plugin Details

Severity: High

ID: 260330

File Name: unpatched_CVE_2021_39537.nasl

Version: 1.1

Type: local

Agent: unix

Family: Misc.

Published: 9/2/2025

Updated: 9/2/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2021-39537

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/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:centos:centos:ncurses-base, p-cpe:/a:redhat:enterprise_linux:ncurses-base, p-cpe:/a:centos:centos:ncurses-c%2b%2b-libs, p-cpe:/a:redhat:enterprise_linux:ncurses-compat-libs, cpe:/o:centos:centos:8, p-cpe:/a:redhat:enterprise_linux:ncurses-libs, p-cpe:/a:redhat:enterprise_linux:ncurses, p-cpe:/a:redhat:enterprise_linux:ncurses-devel, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:centos:centos:ncurses-term, p-cpe:/a:centos:centos:ncurses-devel, p-cpe:/a:redhat:enterprise_linux:ncurses-term, p-cpe:/a:centos:centos:ncurses, p-cpe:/a:centos:centos:ncurses-libs, p-cpe:/a:redhat:enterprise_linux:ncurses-c%2b%2b-libs, p-cpe:/a:centos:centos:ncurses-compat-libs

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 9/20/2021

Reference Information

CVE: CVE-2021-39537

Detections

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