# Cerebras: Critical incident: Identified - Caused by External Depencency

**Summary:** _summary pending_
## Part of an outage event

- [Cloudflare outage, Nov 18, 2025: 77 vendors, 81 incidents](https://rewindex.com/events/2025-11-18-cloudflare)
- This incident started in the same window without naming Cloudflare (timing only, not evidence of a link). (timing only, posted +1 h 1 min vs the first vendor naming Cloudflare)

```mermaid
flowchart LR
  root["Cloudflare<br/>own incident not archived"]:::inferred
  h1["Within an hour<br/>13 vendors, 13 blamed Cloudflare<br/>Stytch, Zed, NordLayer +10"]:::blames
  root --> h1
  h4["1 to 4 hours later<br/>19 vendors, 19 blamed Cloudflare<br/>GitLab, Gorgias, Cursor +16"]:::blames
  root --> h4
  later["Later<br/>7 vendors, 7 blamed Cloudflare<br/>RudderStack, Brex, Maven Central +4"]:::blames
  root --> later
  me["Cerebras (this incident)<br/>posted +1 h 1 min"]:::me
  root -.->|"same window"| me
```

_Detected automatically from incidents that started together and named the same provider; a link means one incident named another vendor, not a confirmed cause._

- Kind: Major incident · Label: critical (vendor)
- Changed: 2025-11-18 12:30 UTC · Detected: 2026-10-19 17:03 UTC
- [Source: https://stspg.io/v0h6psntlmnw](https://stspg.io/v0h6psntlmnw)
- [Company: Cerebras](https://rewindex.com/company/cerebras.md)
- Versions: before (none: first archived) → after incident\_version:665/wmmxw7p006hq@456df49cf782
- Change 1 of 1 for this incident

Incident page (full timeline): [Identified - Caused by External Depencency](https://rewindex.com/company/cerebras/incidents/wmmxw7p006hq.md)
## What changed

**1. Added: Title**

```diff
+ Identified - Caused by External Depencency
```

**2. Added: Impact**

```diff
+ critical
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2025-11-18 12:30 UTC
```

**5. Added: Resolved time**

```diff
+ 2025-11-18 15:36 UTC
```

**6. Added: Affected components**

```diff
+ Developer Console, GPT-OSS-120B, Llama3.1-8B, Llama-3.3-70B, Qwen-3-235B-Instruct-2507, Qwen-3-32B, ZAI-GLM-4.6
```

**7. Added: Update** (investigating) · 2025-11-18 12:30 UTC

```diff
+ Around 4:09 AM PT, Inference Platform went down causing 500 Internal Server Errors. This issue is caused by a third-party system, and we are currently monitoring.
```

**8. Added: Update** (investigating) · 2025-11-18 12:54 UTC

```diff
+ We are continuing to investigate this issue.
```

**9. Added: Update** (investigating) · 2025-11-18 14:24 UTC

```diff
+ We are continuing to investigate this issue.
```

**10. Added: Update** (identified) · 2025-11-18 14:41 UTC

```diff
+ The issue has been identified and a fix is being implemented.
```

**11. Added: Update** (monitoring) · 2025-11-18 14:55 UTC

```diff
+ A fix has been implemented and we are monitoring the results.
```

**12. Added: Update** (monitoring) · 2025-11-18 14:57 UTC

```diff
+ The platform is accessible now. We are monitoring to ensure stability.
```

**13. Added: Update** (resolved) · 2025-11-18 15:36 UTC

```diff
+ This incident has been resolved.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2025-11-18 12:30 UTC | Critical incident: Identified - Caused by External Depencency (this change) | critical |

All Cerebras changes: [timeline](https://rewindex.com/company/cerebras/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._


---
Canonical: https://rewindex.com/change/i177d73972f4ec6 · Markdown: https://rewindex.com/change/i177d73972f4ec6.md · JSON: https://rewindex.com/api/v1/changes/i177d73972f4ec6 · Generated 2026-10-19T23:13:34.645Z