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Vulnerability record · CVE-2021-44954 · published 18 July 2022

CVE-2021-44954: Qvis dvr firmware vulnerability

Qvis · Dvr Firmware

In QVIS NVR DVR before 2021-12-13, an attacker can escalate privileges from a qvisdvr user to the root user by abusing a Sudo misconfiguration.

7.8 CVSS 3.1 High EPSS 0.32% · top 77.7%
7.8CVSS 3.1 base score
0.32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

In QVIS NVR DVR before 2021-12-13, an attacker can escalate privileges from a qvisdvr user to the root user by abusing a Sudo misconfiguration.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gist.github.com/Meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee/a670418d51051d4e6513d86e84e8d5b8 Third Party Advisory
https://twitter.com/Me9187/status/1414906288287404039 ExploitThird Party Advisory
https://gist.github.com/Meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee/a670418d51051d4e6513d86e84e8d5b8 Third Party Advisory
https://twitter.com/Me9187/status/1414906288287404039 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-41419Qvis dvr firmware deserialization of untrusted data vulnerabilityQVIS NVR DVR before 2021-12-13 is vulnerable to Remote Code Execution via Java deserialization.EPSS 8.7%

Source: NIST National Vulnerability Database (record CVE-2021-44954), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.