Is CVE-2019-6991 in the CISA KEV catalog?

No. CVE-2019-6991 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-6991?

CVE-2019-6991 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2019-6991?

CVE-2019-6991 has an EPSS score of 3.31% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-6991?

Upgrade zoneminder on debian 11 to 1.32.3-2 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2019-6991

CRITICALEPSS 87th pctl

9.8

CVSS v3

NVD

Description

A classic Stack-based buffer overflow exists in the zmLoadUser() function in zm_user.cpp of the zmu binary in ZoneMinder through 1.32.3, allowing an unauthenticated attacker to execute code via a long username.

CWE-787Out-of-bounds Write

How to fix

Remediation Available

zoneminderDebian

Fixed in:1.32.3-2CVE-2019-6991

zoneminderUbuntu

Fixed in:1.29.0+dfsg-1ubuntu2+esm1USN-5889-1

Fixed in:1.32.3-2ubuntu2+esm1USN-5889-1

Fixed in:1.36.12+dfsg1-1ubuntu0.1~esm1USN-5889-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

3.31%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

Patch1

github.com

Exploit1

github.com

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2023-4863	High	8.8	100%	KEV	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix

Embed a live status badge for CVE-2019-6991

Markdown

[![CVE-2019-6991](https://tridentstack.com/cve/badge/CVE-2019-6991.svg)](https://tridentstack.com/cve/CVE-2019-6991)

HTML

<a href="https://tridentstack.com/cve/CVE-2019-6991"><img src="https://tridentstack.com/cve/badge/CVE-2019-6991.svg" alt="CVE-2019-6991"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.