ETK-2026-2767Zero's internal tracking ID, independent of the CVE number.
waiting for further signalsZero needs more public information before it can validate it.description
Tailscale SSH deployments may be exposed to a privilege-escalation path when tailnet ACLs broadly permit access from authorized devices to servers. An attacker who has compromised an authorized device may be able to use that access to gain elevated privileges on an allowed server.
mitigation
Restrict tailnet ACLs to the smallest necessary source devices, destinations, and SSH access paths, especially for privileged servers. Apply Tailscale updates containing the vendor's fix when they are available; the evidence does not identify a fixed version.
outcome
Contextual, not validated: no deterministic check could cover this one, and no technique passed our review.
source signals
Public signals that triggered or updated the pipeline. These are inputs for the deltas above.
- 2026-10-27 14:09Zbleepingcomputer: trigger signal, started the run
this entry in the feed
GET /api/v1/feed/ETK-2026-2767
{ "etk_id": "ETK-2026-2767", "cve_id": null, "display_id": "ETK-2026-2767", "ghsa_id": null, "euvd_id": null, "status": "published", "anchor_state": "awaiting_cve", "title": "Privilege escalation flaw in Tailscale SSH", "summary": "Tailscale SSH deployments may be exposed to a privilege-escalation path when tailnet ACLs broadly permit access from authorized devices to servers. An attacker who has compromised an authorized device may be able to use that access to gain elevated privileges on an allowed server.", "mitigation": "Restrict tailnet ACLs to the smallest necessary source devices, destinations, and SSH access paths, especially for privileged servers. Apply Tailscale updates containing the vendor's fix when they are available; the evidence does not identify a fixed version.", "vendor": "Tailscale", "product": "Tailscale SSH", "affected": [], "cwes": null, "cvss_score": null, "cvss_src": null, "cvss_vector": null, "epss_score": null, "epss_percentile": null, "epss_asof": null, "automation": "contextual", "check": false, "check_confidence_basis": null, "exploit": false, "pipeline_minutes": 80.67644558333333, "t0_at": null, "signals": { "trigger_signal": { "at": "2026-10-27T14:09:46+00:00", "days": -0.15182662722222223, "is_lower_bound": true, "measured_at": "2026-10-27T17:48:23.855063+00:00", "url": "https://www.bleepingcomputer.com/news/security/tailscale-warns-of-serious-ssh-flaws-allowing-root-privilege-escalation/" } } }
published 2026-10-27 14:25Z
last change 2026-10-27 17:35Z
Need the technical details behind an entry?
Every entry here shows what we attempted and when. The technical details, the generated exploit that fired it and the evidence behind the verdict are not public. Tell us about your use case and we’ll get back to you about extended API access.