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CVE-2021-43442: A Logic Flaw vulnerability exists in i3 International Inc Annexxus Camera V5.2.0 build 150317 (Ax46), V5.0.9 b

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This month
HIGH 8.1REMOTEMITIGATEMITIGATEMITIGATE

CVE-2021-43442 is a high-severity flaw (CVSS 8.1) affecting ax46 firmware, ax68 firmware, ax78 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Logic Flaw vulnerability exists in i3 International Inc Annexxus Camera V5.2.0 build 150317 (Ax46), V5.0.9 build 151106 (Ax68), and V5.0.9 build 150615 (Ax78) due to a failure to allow the creation of more than one administrator account; however, this can be bypassed by parameter maniulation using PUT and DELETE and by calling the 'UserPermission' endpoint with the ID of created account and set it to 'admin' userType, successfully adding a seco

Why this priority

  • High severity
  • Remotely exploitable, no login, no user action

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

Risk facts

CVSS score8.1 (High)
Attack vectorNetwork (remote)
Attack complexityHigh
Privileges neededNone
User interactionNone
EPSS exploit chance1.0% (top 37%)
CISA exploited listNo
Published2022-04-11
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: i3international

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

Am I affected?

Timeline

i3international ax46 firmware MITIGATE
Affected: 5.2.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 5.2.0
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
i3international ax68 firmware MITIGATE
Affected: 5.0.9
Fixed in: no fixed release known
Safe to downgrade to: a release before 5.0.9
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
i3international ax78 firmware MITIGATE
Affected: 5.0.9
Fixed in: no fixed release known
Safe to downgrade to: a release before 5.0.9
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
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-2021-43442?

ax46 firmware: mitigate or apply the listed mitigation; ax68 firmware: mitigate or apply the listed mitigation; ax78 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-43442 being exploited?

CVE-2021-43442 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-2021-43442 affect?

CVE-2021-43442 affects ax46 firmware, ax68 firmware, ax78 firmware. Severity is high (CVSS 8.1). A Logic Flaw vulnerability exists in i3 International Inc Annexxus Camera V5.2.0 build 150317 (Ax46), V5.0.9 build 151106 (Ax68), and V5.0.9 build 150615 (Ax78) due to a failure to allow the creation of more than one administrator account;

How urgent is CVE-2021-43442?

Priority 49/100. High severity; Remotely exploitable, no login, no user action

References

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