What’s Vulnerable › Vulnerabilities

CVE-2021-39537

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-09-20 · updated 2026-10-08
• Weakness: CWE-787

Description

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

Affected products

• macOS: 10.12.6
• Apple macOS: 11.7, 13.0
• GNU ncurses: through 6.2.1

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
• https://lists.debian.org/debian-lts-announce/2023/12/msg00004.html
• https://lists.gnu.org/archive/html/bug-ncurses/2020-08/msg00006.html
• https://lists.gnu.org/archive/html/bug-ncurses/2021-10/msg00023.html
• https://security.netapp.com/advisory/ntap-20230427-0012/
• https://support.apple.com/kb/HT213443
• https://support.apple.com/kb/HT213444
• https://support.apple.com/kb/HT213488

Get alerted when CVE-2021-39537 or the next vulnerability affects your stack