6.5

CVE-2020-19189: debian debian_linux Out-of-bounds Write

Modified
AliasesUBUNTU-CVE-2020-19189USN-6451-1DEBIAN-CVE-2020-19189
Published 22-08-2023Last modified 14-10-2026

Vulnerability summary

CVE-2020-19189 is a medium (CVSS 6.5) Out-of-bounds Write vulnerability in debian debian_linux. EPSS estimates a 2.29% chance of exploitation in the next 30 days, higher than 83.2% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 6.5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
2.29%
0%100%
Low · +0.06 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Timeline

  1. 22-08-2023
    PublishedVulnerability first disclosed.
  2. 14-10-2026
    Last modifiedVulnerability information updated.

Description

Buffer Overflow vulnerability in postprocess_terminfo function in tinfo/parse_entry.c:997 in ncurses 6.1 allows remote attackers to cause a denial of service via crafted command.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

2.29%

Chance of exploitation in the next 30 days

Percentile

83%

Versus all other CVEs

30-day change

Increase +0.06 pp

From 2.23% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • githubUnverified

    Fuzzpoc

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Debian2 products
  • ncurses< 6.1+20181013-2+deb10u4 | < 6.1+20191019-1
  • debian_linuxEOL10.0
Invisible-island1 product
Netapp1 product
Ubuntu1 product
  • ncurses< 5.9+20140118-1ubuntu1+esm4 | < 6.0+20160213-1ubuntu1+esm4 | < 6.1-1ubuntu1.18.04.1+esm1

4 vendors · 5 products

References

14 links
Show all 14 references