CVE-2022-43999: An issue was discovered in BACKCLICK Professional 5.9.63

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2022-43999 is a critical-severity flaw (CVSS 9.8) affecting backclick. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in BACKCLICK Professional 5.9.63. Due to exposed CORBA management services, arbitrary system commands can be executed on the server.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 36%)
CISA exploited list	No
Weakness	CWE-306
Published	2022-11-16
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: backclick

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

Am I affected?

Timeline

2022-11-16 22:15 UTCPublished CVE record published
2026-06-17 05:07 UTCUpdated Record last modified

backclick backclick DOWNGRADE

Affected: 5.9.63

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.9.63

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 5.9.63 (Debian / Ubuntu)

apt-cache madison backclick sudo apt install backclick=<VERSION_BEFORE_5.9.63> sudo apt-mark hold backclick

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list backclick sudo dnf downgrade backclick-<VERSION_BEFORE_5.9.63> sudo dnf versionlock add backclick

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2022-43999?

backclick: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-43999 being exploited?

CVE-2022-43999 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-2022-43999 affect?

CVE-2022-43999 affects backclick. Severity is critical (CVSS 9.8). An issue was discovered in BACKCLICK Professional 5.9.63. Due to exposed CORBA management services, arbitrary system commands can be executed on the server.

How urgent is CVE-2022-43999?

Priority 60/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2022-44008 MEDIUM 6.5 DOWNGRADE An issue was discovered in BACKCLICK Professional 5.9.63
CVE-2022-44007 HIGH 8.8 DOWNGRADE An issue was discovered in BACKCLICK Professional 5.9.63
CVE-2022-44006 CRITICAL 9.8 DOWNGRADE An issue was discovered in BACKCLICK Professional 5.9.63
CVE-2022-44005 MEDIUM 5.3 DOWNGRADE An issue was discovered in BACKCLICK Professional 5.9.63
CVE-2022-44004 CRITICAL 9.8 DOWNGRADE An issue was discovered in BACKCLICK Professional 5.9.63

References

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