CVE-2021-39537

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

CVSS 3.1

8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

3.2% chance of exploitation in the next 30 days; higher than 88% of CVEs (scores of 2026-10-25)

CWE

CWE-787

Published

2021-09-20

Modified

2026-10-08

Record from

the NVD, synced 2026-10-19

Affected

• apple:mac_os_x
• apple:macos
• invisible-island:ncurses

References

• http://cvsweb.netbsd.org/bsdweb.cgi/pkgsrc/devel/ncurses/patches/patch-ncurses_tinfo_captoinfo.c?rev=1.1&content-type=text/x-cvsweb-markup
• http://seclists.org/fulldisclosure/2022/Oct/28
• http://seclists.org/fulldisclosure/2022/Oct/41
• http://seclists.org/fulldisclosure/2022/Oct/43
• http://seclists.org/fulldisclosure/2022/Oct/45

Check your stackJSON