High 8.8Published Sep 19, 2021

CVE-2021-39537An issue was discovered in ncurses through v6.2-1.

Updated under an hour ago (Oct 28, 2026, 9:10 AM ET)

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It affects invisible-island ncurses and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for invisible-island ncurses

Exploited in the last 30 days

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

CVSS: 8.8 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: mitre
NVD analysis: Modified
Record last updated: Oct 8, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

invisible-island ncurses invisible-island:ncurses	through 6.2.1	NVD
apple mac_os_x apple:mac_os_x	10.12.6	NVD
apple macos apple:macos	11.7; 13.0	NVD

References

References

https://lists.gnu.org/archive/html/bug-ncurses/2020-08/msg00006.html
https://lists.gnu.org/archive/html/bug-ncurses/2021-10/msg00023.html
http://cvsweb.netbsd.org/bsdweb.cgi/pkgsrc/devel/ncurses/patches/patch-ncurses_tinfo_captoinfo.c?rev=1.1&content-type=text/x-cvsweb-markup
https://support.apple.com/kb/HT213443
https://support.apple.com/kb/HT213444
https://support.apple.com/kb/HT213488
http://seclists.org/fulldisclosure/2022/Oct/41	mailing-list
http://seclists.org/fulldisclosure/2022/Oct/28	mailing-list
http://seclists.org/fulldisclosure/2022/Oct/43	mailing-list
http://seclists.org/fulldisclosure/2022/Oct/45	mailing-list
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.