Cisco drops another exploited zero-day, this time a perfect 10
Techie with three months' experience was sent in as the Cisco expert and proceeded to blow everything up 17 days ago Cisco bug severity warning reads like Olympic gymnastics scores: 10, 10, 9.9, 9.6, and 7.5. Successful exploitation can give an unauthenticated remote attacker command execution with root privileges.Product Security Incident Response Team said it was aware of active exploitation and urged customers to install the fixes immediately. CISA has also added the vulnerability to its Known Exploited Vulnerabilities catalog.
- ▪Techie with three months' experience was sent in as the Cisco expert and proceeded to blow everything up 17 days ago Cisco bug severity warning reads like Olympic gymnastics scores: 10, 10, 9.9, 9.6, and 7.5.
- ▪Successful exploitation can give an unauthenticated remote attacker command execution with root privileges.Product Security Incident Response Team said it was aware of active exploitation and urged customers to install the fixes immediately
- ▪CISA has also added the vulnerability to its Known Exploited Vulnerabilities catalog.
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| Original publisher | The Register |
| Canonical URL | https://www.theregister.com/security/2026/09/17/cisco-drops-another-exploited-zero-day-this-time-a-perfect-10/5297180 |
| Publication time | Thu, 17 Sep 2026 14:40:00 +0200 |
| Retrieval time | 2026-09-17T12:43:44.859Z |
| Last seen | 2026-09-17T12:43:44.859Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | VleW2ZHyvW3H · 1 stories |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
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| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
(function() { let windowUrl = window.location.href; windowUrl = windowUrl.substring(windowUrl.indexOf('?') + 1); let messageElement = document.querySelector('.shareableMessage'); if (windowUrl && windowUrl.includes('code') && windowUrl.includes('expires')) { messageElement.style.display = 'block'; } })(); security Cisco drops another exploited zero-day, this time a perfect 10 ISE authentication bypass under active attack just days after another Cisco zero-day sent admins scrambling to patch Carly Page Carly Page Published thu 17 Sep 2026 // 13:40 UTC READ MORE Cisco email security boxes can be rooted by...
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Excerpt limited to ~120 words for fair-use compliance. The full article is at The Register.
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