CVE-2021-20713: Privilege escalation vulnerability in QND Advance/Premium/Standard Ver.11.0.4i and earlier allows an attacker

Q: How do I fix CVE-2021-20713?

qnd: upgrade to newer than 11.0.4i. Exact commands for each OS are on this page.

Q: Is CVE-2021-20713 being exploited?

CVE-2021-20713 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-20713 affect?

CVE-2021-20713 affects qnd. Severity is high (CVSS 7.8). Privilege escalation vulnerability in QND Advance/Premium/Standard Ver.11.0.4i and earlier allows an attacker who can log in to the PC where the product's Windows client is installed to gain administrative privileges via unspecified vectors

Routine

HIGH 7.8UPGRADE

CVE-2021-20713 is a high-severity flaw (CVSS 7.8) affecting qnd. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Privilege escalation vulnerability in QND Advance/Premium/Standard Ver.11.0.4i and earlier allows an attacker who can log in to the PC where the product's Windows client is installed to gain administrative privileges via unspecified vectors. As a result, sensitive information may be altered/obtained or unintended operations may be performed.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 87%)
CISA exploited list	No
Weakness	CWE-269
Published	2021-05-24
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: qualitysoft

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-05-24 04:15 UTCPublished CVE record published
2026-06-17 03:34 UTCUpdated Record last modified

qualitysoft qnd UPGRADE

Affected: <= 11.0.4i

Fixed in: newer than 11.0.4i

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 11.0.4i (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade qnd

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade qnd

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2021-20713?

qnd: upgrade to newer than 11.0.4i. Exact commands for each OS are on this page.

Is CVE-2021-20713 being exploited?

CVE-2021-20713 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-2021-20713 affect?

CVE-2021-20713 affects qnd. Severity is high (CVSS 7.8). Privilege escalation vulnerability in QND Advance/Premium/Standard Ver.11.0.4i and earlier allows an attacker who can log in to the PC where the product's Windows client is installed to gain administrative privileges via unspecified vectors

How urgent is CVE-2021-20713?

Priority 30/100. High severity

Software pages

Windows vulnerabilities

References

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