Quick answers
- Is CVE-2026-20318 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-20318 being exploited in the wild.
- How severe is CVE-2026-20318?
- Critical severity, with a CVSS score of 9.6, published 19 August 2026.
- Which products and versions are affected?
- Cisco Secure Workload 3.10 and earlier, 4.0 before 4.0.4.16.
- Is there a fix for CVE-2026-20318?
- A patch was published on 2026-08-19: Fixed releases: 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-2026-20318 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-20318?
- 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-2026-20318 is an improper input validation vulnerability (CWE-20) in Cisco Secure Workload affecting both SaaS and on-premises deployments. The vulnerability has a CVSS score of 9.6 with a network attack vector, requiring no authentication or user interaction. An unauthenticated remote attacker can exploit this flaw to achieve high impact on confidentiality, integrity, and availability. The vulnerability was discovered during internal security testing and is not known to be exploited in the wild. Patches are available: upgrade to Secure Workload 3.10.9.1 or later for legacy releases, or 4.0.4.16 or later for version 4.0 and above.
Affected products
- Cisco Secure Workload 3.10 and earlier, 4.0 before 4.0.4.16
Timeline
- 2026-08-19: disclosed
- 2026-08-19: patched: Fixed releases: 3.10.9.1 and 4.0.4.16