CVE catalog

CVE-2020-19186

ncurses: CVE-2020-19186

Severity: Medium · CVSS 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
Published: Aug 22, 2023, 7:15:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 2.04% · Oct 25, 2026

Buffer Overflow vulnerability in _nc_find_entry function in tinfo/comp_hash.c:66 in ncurses 6.1 allows remote attackers to cause a denial of service via crafted command.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	ncurses	sid	`6.6+20260608-2`	fixed
Debian	ncurses	forky	`6.6+20260608-2`	fixed
Debian	ncurses	trixie	`6.5+20250216-2`	fixed
Debian	ncurses	bookworm	`6.4-4`	fixed
Cpe	ncurses	Not reported	Not reported	unknown
Cpe	active_iq_unified_manager	Not reported	Not reported	unknown

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	ncurses	source	sid	`6.1+20191019-1`	not yet assigned	Not reported	Not reported
Debian	ncurses	source	forky	`6.1+20191019-1`	not yet assigned	Not reported	Not reported
Debian	ncurses	source	trixie	`6.1+20191019-1`	not yet assigned	Not reported	Not reported
Debian	ncurses	source	bookworm	`6.1+20191019-1`	not yet assigned	Not reported	Not reported

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[lib32ncurses6]Unknown
Source package: [ncurses]
Details (1)
- 6.4-4 · amd64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
[lib32ncurses-dev]Unknown
Source package: [ncurses]
Details (1)
- 6.4-4 · amd64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
[lib32ncursesw6]Unknown
Source package: [ncurses]
Details (1)
- 6.4-4 · amd64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
[lib32tinfo6]Unknown
Source package: [ncurses]
Details (1)
- 6.4-4 · amd64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
[libncurses5]Unknown
Source package: [ncurses]
Details (2)
- 6.4-4 · amd64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
- 6.4-4 · arm64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
[libncurses5-dev]Unknown
Source package: [ncurses]
Details (2)
- 6.4-4 · amd64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
- 6.4-4 · arm64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
[libncurses6]Unknown
Source package: [ncurses]
Details (2)
- 6.4-4 · amd64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
- 6.4-4 · arm64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
[libncurses-dev]Unknown
Source package: [ncurses]
Details (2)
- 6.4-4 · amd64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
- 6.4-4 · arm64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
[libncursesw5]Unknown
Source package: [ncurses]
Details (2)
- 6.4-4 · amd64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
- 6.4-4 · arm64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
[libncursesw5-dev]Unknown
Source package: [ncurses]
Details (2)
- 6.4-4 · amd64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
- 6.4-4 · arm64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
[libncursesw6]Unknown
Source package: [ncurses]
Details (2)
- 6.4-4 · amd64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
- 6.4-4 · arm64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
[libtinfo5]Unknown
Source package: [ncurses]
Details (2)
- 6.4-4 · amd64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
- 6.4-4 · arm64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
[libtinfo6]Unknown
Source package: [ncurses]
Details (2)
- 6.4-4 · amd64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
- 6.4-4 · arm64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
[libtinfo-dev]Unknown
Source package: [ncurses]
Details (2)
- 6.4-4 · amd64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
- 6.4-4 · arm64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
[ncurses-base]Unknown
Source package: [ncurses]
Details (2)
- 6.4-4 · all · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
- 6.4-4 · all · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
[ncurses-bin]Unknown
Source package: [ncurses]
Details (2)
- 6.4-4 · amd64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
- 6.4-4 · arm64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
[ncurses-doc]Unknown
Source package: [ncurses]
Details (2)
- 6.4-4 · all · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
- 6.4-4 · all · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
[ncurses-examples]Unknown
Source package: [ncurses]
Details (2)
- 6.4-4 · amd64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
- 6.4-4 · arm64 · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
[ncurses-term]Unknown
Source package: [ncurses]
Details (2)
- 6.4-4 · all · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm
- 6.4-4 · all · bookworm
  Fixed · Fixed: 6.1+20191019-1
  dsa · ncurses · debian · bookworm

Observed: Oct 23, 2026, 5:48:55 PM UTC

References

[CERT-Bund public advisories] · [CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]