CVE-2022-29539: resi-calltrace in RESI Gemini-Net 4.2 is affected by OS Command Injection

This month

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2022-29539 is a critical-severity flaw (CVSS 9.8) affecting gemini-net. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

resi-calltrace in RESI Gemini-Net 4.2 is affected by OS Command Injection. It does not properly check the parameters sent as input before they are processed on the server. Due to the lack of validation of user input, an unauthenticated attacker can bypass the syntax intended by the software (e.g., concatenate `&|;\r\ commands) and inject arbitrary system commands with the privileges of the application user.

Why this priority

Critical severity
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	1.7% (top 22%)
CISA exploited list	No
Weakness	CWE-78
Published	2022-05-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: resi

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

Am I affected?

Timeline

2022-05-12 15:15 UTCPublished CVE record published
2026-06-17 04:40 UTCUpdated Record last modified

resi gemini-net DOWNGRADE

Affected: 4.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.2

1. Check installed version

apt-cache policy gemini-net || rpm -q gemini-net || gemini-net --version

2. No fixed release: DOWNGRADE to a release before 4.2 (Debian / Ubuntu)

apt-cache madison gemini-net sudo apt install gemini-net=<VERSION_BEFORE_4.2> sudo apt-mark hold gemini-net

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

dnf --showduplicates list gemini-net sudo dnf downgrade gemini-net-<VERSION_BEFORE_4.2> sudo dnf versionlock add gemini-net

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-2022-29539?

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

Is CVE-2022-29539 being exploited?

CVE-2022-29539 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-2022-29539 affect?

CVE-2022-29539 affects gemini-net. Severity is critical (CVSS 9.8). resi-calltrace in RESI Gemini-Net 4.2 is affected by OS Command Injection. It does not properly check the parameters sent as input before they are processed on the server. Due to the lack of validation of user input, an unauthenticated atta

How urgent is CVE-2022-29539?

Priority 59/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2022-29540 MEDIUM 6.1 DOWNGRADE resi-calltrace in RESI Gemini-Net 4.2 is affected by Multiple XSS issues
CVE-2022-29538 MEDIUM 5.3 DOWNGRADE RESI Gemini-Net Web 4.2 is affected by Improper Access Control in authorization logic

References

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