What is CVE-2020-19188?

CVE-2020-19188 is a medium-severity vulnerability in GNU Ncurses, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2023-08-22.

How severe is CVE-2020-19188?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Buffer overflow in GNU Ncurses

CVE-2020-19188

Buffer Overflow vulnerability in fmt_entry function in progs/dump_entry.c:1116 in ncurses 6.1 allows remote attackers to cause a denial of service via crafted command.

Vulnerability class: Buffer Overflow

Published 2023-08-22 · last modified 2026-07-23.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.018 (77.0th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.018 · change: +0.000

Affected products

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/zjuchenyuan/fuzzpoc/blob/master/infotocap_poc4.md (Exploit, Third Party Advisory)
security.netapp.com/advisory/ntap-20231006-0005/ (Third Party Advisory)
support.apple.com/kb/HT214038
support.apple.com/kb/HT214036
support.apple.com/kb/HT214037
seclists.org/fulldisclosure/2023/Dec/9 (mailing-list)
seclists.org/fulldisclosure/2023/Dec/10 (mailing-list)
seclists.org/fulldisclosure/2023/Dec/11 (mailing-list)

Frequently asked questions

What is CVE-2020-19188?: CVE-2020-19188 is a medium-severity vulnerability in GNU Ncurses, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2023-08-22.
How severe is CVE-2020-19188?: Medium severity. CVSS v3 base score is 6.5 out of 10.