Is CVE-2026-20231 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-20231 being exploited in the wild.

How severe is CVE-2026-20231?

Critical severity, with a CVSS score of 9.9, published 19 August 2026.

Which products and versions are affected?

Cisco Secure Workload 3.10 and earlier (3.10.9.1 is fixed), 4.0 through 4.0.4.15 (4.0.4.16 is fixed).

Is there a fix for CVE-2026-20231?

A patch was published on 2026-08-19: Fixed releases available: 3.10.9.1 and 4.0.4.16 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-20231 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-20231?

Check whether you run Cisco Secure Workload at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-20231: Cisco Secure Workload improper neutralization of special elements

CVE-2026-20231 · Severity: critical · CVSS 9.9 · Published 2026-08-19

Cisco Secure Workload is a cloud security platform used to monitor and control application communications across hybrid and multi-cloud environments. Multiple critical vulnerabilities in the software could allow unauthenticated attackers to inject malicious commands, bypass access controls, or execute arbitrary code, potentially leading to full compromise of the deployment and unauthorized access to monitored infrastructure.

Technologies: Cisco Secure Workload. Vendors: Cisco.

Quick answers

Is CVE-2026-20231 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-20231 being exploited in the wild.
How severe is CVE-2026-20231?: Critical severity, with a CVSS score of 9.9, published 19 August 2026.
Which products and versions are affected?: Cisco Secure Workload 3.10 and earlier (3.10.9.1 is fixed), 4.0 through 4.0.4.15 (4.0.4.16 is fixed).
Is there a fix for CVE-2026-20231?: A patch was published on 2026-08-19: Fixed releases available: 3.10.9.1 and 4.0.4.16 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-20231 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-20231?: Check whether you run Cisco Secure Workload at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

CVE-2026-20231 represents improper neutralization of special elements (CWE-74), covering command injection, OS command injection, and argument injection vulnerabilities. The vulnerability affects Cisco Secure Workload software in both SaaS and on-premises deployments. Attack vector is network-based with no authentication required and no user interaction needed. An attacker can exploit this to inject and execute arbitrary commands on affected systems. Patches are available: upgrade to Secure Workload 3.10.9.1 or later for 3.10.x branch, and 4.0.4.16 or later for 4.0.x branch. Note that Cluster, Agent, and Connector components must all be upgraded.

Affected products

Cisco Secure Workload 3.10 and earlier (3.10.9.1 is fixed), 4.0 through 4.0.4.15 (4.0.4.16 is fixed)

Timeline

2026-08-19: disclosed: Cisco Security Advisory published; vulnerabilities discovered during internal security review using frontier AI models
2026-08-19: patched: Fixed releases available: 3.10.9.1 and 4.0.4.16

References

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