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CVE-2021-41419

46
FAUCET Score

CVE-2021-41419 is a critical remote code execution vulnerability affecting QVIS NVR and DVR devices prior to the 2021-12-13 firmware update, stemming from insecure Java deserialization (CWE-502). With a CVSS score of 9.8, this vulnerability allows unauthenticated attackers to execute arbitrary code remotely over the network with low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation or Metasploit modules, a Nuclei template exists for detection, and the vulnerability has a high EPSS score indicating significant exploitability potential. Despite its severity, there is minimal public discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2021-12-13CPE matchmatch criteria
cpe:2.3:o:qvis:dvr_firmware:*:*:*:*:*:*:*:*
< 2021-12-13CPE matchmatch criteria
cpe:2.3:o:qvis:nvr_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
8.52%
Probability of exploitation in next 30 days
EPSS Percentile
94.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2021-41419 · Jul 18, 2021
This CVE's current EPSS score of 0.0852 is in the 90th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

gist.github.com / Meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee/712ac36c8a08e2698e875169442a23a4
Third Party Advisory
github.com / projectdiscovery/nuclei-templates/blob/master/iot/qvisdvr-deserialization-rce.yaml
ExploitThird Party Advisory
twitter.com / Me9187/status/1414904314368348163
ExploitThird Party Advisory