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CVE-2025-66626

Argoproj Argo Workflows command injection

8.1 HIGHPublic exploitEPSS 0.68%
  1. Published9 Dec 2025

Description

Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. Versions 3.6.13 and below and versions 3.7.0 through 3.7.4, contain unsafe untar code that handles symbolic links in archives. Concretely, the computation of a link's target and the subsequent check are flawed. An attacker can overwrite the file /var/run/argo/argoexec with a script of their choice, which would be executed at the pod's start. The patch deployed against CVE-2025-62156 is ineffective against malicious archives containing symbolic links. This issue is fixed in versions 3.6.14 and 3.7.5.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Affected products

Argoproj Argo Workflows≥ 3.7.0 < 3.7.5 · < 3.6.14

Remediation

Fixed in
Argoproj Argo Workflows≥ 3.7.5

References

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Frequently asked

Is CVE-2025-66626 being actively exploited?

CVE-2025-66626 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.68%.

How severe is CVE-2025-66626?

CVE-2025-66626 has a CVSS 3.1 base score of 8.1, rated high. EPSS estimates a 0.68% probability of exploitation.

Which products are affected by CVE-2025-66626?

Affected products include Argoproj Argo Workflows.

How do I fix CVE-2025-66626?

Upgrade affected software to a fixed version, for example Argoproj Argo Workflows 3.7.5 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-66626 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.