How severe is CVE-2026-84436?

CVE-2026-84436 has a CVSS score of 9.1/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by CVE-2026-84436?

Affected package information for CVE-2026-84436 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2026-84436?

No fixed release is recorded for CVE-2026-84436 yet. Track the upstream advisory, and apply the exposure-reduction steps below in the meantime.

How do I detect CVE-2026-84436 in my code and dependencies?

Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).

How do I mitigate CVE-2026-84436 if there is no patch (or I can't update yet)?

Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does.

Is CVE-2026-84436 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-84436 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What type of vulnerability is CVE-2026-84436?

CVE-2026-84436 is classified as OS Command Injection (CWE-78). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2026-84436 published, and has it been updated?

CVE-2026-84436 was published on September 29, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🛡️

Not in CISA KEV

CRITICAL severity

CVE-2026-84436

CRITICAL

CVE-2026-84436 is a critical-severity (CVSS 9.1) OS Command Injection vulnerability. No vendor fix is recorded yet; mitigation options are listed below.

IBM Guardium Data Protection 12.2 is vulnerable to command injection in the certificate export CLI functionality, allowing a privileged authenticated CLI user to execute arbitrary commands…

Published

Sep 29, 2026

Updated

Sep 29, 2026

Affected

—

Patched

—

Exploits

None indexed

Exploitation data as of Sep 29, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Description

IBM Guardium Data Protection 12.2 is vulnerable to command injection in the certificate export CLI functionality, allowing a privileged authenticated CLI user to execute arbitrary commands with root privileges.

Detection & mitigation playbook

Vulnerability

Detect
Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).
Remediation status
No fixed release is recorded for CVE-2026-84436 yet. Track the upstream advisory, and apply the exposure-reduction steps below in the meantime.
Mitigate without a patch
Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does.

Frequently Asked Questions

O3 Security · Impact-Aware SCA

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CVE-2026-84436

Description

Detection & mitigation playbook

Detect

Remediation status

Mitigate without a patch

Frequently Asked Questions

Is CVE-2026-84436 in your dependencies?