CVE-2020-19187: Buffer Overflow vulnerability in fmt_entry function in progs/dump_entry.c:1100 in ncurses 6.1 allows remote at

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MEDIUM 6.5DOWNGRADEMITIGATE

CVE-2020-19187 is a medium-severity flaw (CVSS 6.5) affecting ncurses, active iq unified manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer Overflow vulnerability in fmt_entry function in progs/dump_entry.c:1100 in ncurses 6.1 allows remote attackers to cause a denial of service via crafted command.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.9% (top 20%)
CISA exploited list	No
Weakness	CWE-787
Published	2023-08-22
Last modified	2026-10-14

Publisher (CNA): MITRE · Vendor: invisible-island · netapp

Last updated 2026-10-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-08-22 19:15 UTCPublished CVE record published
2026-10-14 10:17 UTCUpdated Record last modified

invisible-island ncurses DOWNGRADE

Affected: 6.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.1

1. Check installed version

apt-cache policy ncurses || rpm -q ncurses || ncurses --version

2. No fixed release: DOWNGRADE to a release before 6.1 (Debian / Ubuntu)

apt-cache madison ncurses sudo apt install ncurses=<VERSION_BEFORE_6.1> sudo apt-mark hold ncurses

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list ncurses sudo dnf downgrade ncurses-<VERSION_BEFORE_6.1> sudo dnf versionlock add ncurses

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

netapp active iq unified manager MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy active-iq-unified-manager || rpm -q active-iq-unified-manager || active-iq-unified-manager --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-19187?

ncurses: downgrade or apply the listed mitigation; active iq unified manager: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-19187 being exploited?

CVE-2020-19187 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-19187 affect?

CVE-2020-19187 affects ncurses, active iq unified manager. Severity is medium (CVSS 6.5). Buffer Overflow vulnerability in fmt_entry function in progs/dump_entry.c:1100 in ncurses 6.1 allows remote attackers to cause a denial of service via crafted command.

How urgent is CVE-2020-19187?

Priority 48/100. Public exploit reference

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CVE-2020-19190 MEDIUM 6.5 DOWNGRADE MITIGATE Buffer Overflow vulnerability in _nc_find_entry in tinfo/comp_hash.c:70 in ncurses 6.1 allows remote attackers
CVE-2020-19189 MEDIUM 6.5 DOWNGRADE MITIGATE Buffer Overflow vulnerability in postprocess_terminfo function in tinfo/parse_entry.c:997 in ncurses 6.1 allow
CVE-2020-19188 MEDIUM 6.5 DOWNGRADE MITIGATE Buffer Overflow vulnerability in fmt_entry function in progs/dump_entry.c:1116 in ncurses 6.1 allows remote at
CVE-2020-19186 MEDIUM 6.5 DOWNGRADE MITIGATE Buffer Overflow vulnerability in _nc_find_entry function in tinfo/comp_hash.c:66 in ncurses 6.1 allows remote

References

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