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Cisco bug severity warning reads like Olympic gymnastics scores: 10, 10, 9.9, 9.6, and 7.5.

Summary by The Register
Cisco has revealed its Secure Workload Software, a micro-segmentation tool formerly known as Tetration that is supposed to stop attackers moving laterally across a network, has four critical flaws plus another high-severity bug. CVE-2026-20315 and CVE-2026-20317 are the two perfect-ten-rated bugs. Both relate to improper access control. Cisco has not offered much detail about either, saying only that 20315 “covers authorization, authentication, …

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Cisco has released a new round of security updates that corrects critical failures in Cisco on two platforms used for network management and corporate workloads. The August 2026 package involves Cisco Crosswork and Cisco Secure Workload Software, bringing together nine vulnerabilities and five rated issues with the maximum CVSS 10.0 score. Vulnerabilities were identified during Cisco internal security reviews and, according to Cisco Product Secu…

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The Register broke the news in London, United Kingdom on Friday, August 21, 2026.
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