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CVE-2026-89035

CVE-2026-89035

validatedZero produced an exploit or a check.

GHSA-j7mx-6943-qw55 ↗EUVD-2026-107400 ↗

check availableZero validated a working check for it.not proven exploitableZero has a detection check, but hasn't produced a full working exploit yet.
cve.orgpublic pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).kevAttacks confirmed in the real world.
MikroTik RouterOS <= 7.23.6; >= 7.24.0, <= 7.24.5
CWE-613 Insufficient Session Expiration
ETK-2026-2343Zero's internal tracking ID, independent of the CVE number., permanent identifier
cvss9.1cna vendorCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
+1h22mTTV
31mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = cve.org publication
trigger signal (cve.org) +0mcheck available+82magent stopped
0
+30min
+60min
+90min

description

MikroTik RouterOS through 7.24.5 is affected by a WebFig session-token replay issue. An attacker who has captured a valid session token can reuse it on a different connection to bypass authentication and obtain administrative access.

mitigation

Clear the RouterOS token store to revoke potentially captured tokens, and limit or disable WebFig access from untrusted networks. Restrict management access to trusted administrators until a vendor-fixed release is available.

check
available
exploit
no
automationDeterministic: a check that runs on its own, the same request on every target. Contextual: an agentic technique that needs to be applied per target, for bugs that depend on contextual flows.
deterministic
auth requiredWhether an attacker needs an account first, based on the CVSS vector's Privileges Required.
no
EPSSEstimate of the chance this CVE is exploited in the next 30 days. Refreshed daily.
–
agent run time
31m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-21 17:16Z
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
–
Δ to kevAttacks confirmed in the real world.
–

outcome

Check only, differential: the check fires on the vulnerable build and is silent on the patched one.

source signals

Public signals that triggered or updated the pipeline. These are inputs for the deltas above.

  1. 2026-10-21 17:16Z
    cve_org: trigger signal, started the run
    https://www.cve.org/CVERecord?id=CVE-2026-89035

this entry in the feed

GET /api/v1/feed/CVE-2026-89035

{
  "etk_id": "ETK-2026-2343",
  "cve_id": "CVE-2026-89035",
  "display_id": "CVE-2026-89035",
  "ghsa_id": "GHSA-j7mx-6943-qw55",
  "euvd_id": "EUVD-2026-107400",
  "status": "published",
  "anchor_state": "anchored",
  "title": "WebFig session token replay in MikroTik RouterOS",
  "summary": "MikroTik RouterOS through 7.24.5 is affected by a WebFig session-token replay issue. An attacker who has captured a valid session token can reuse it on a different connection to bypass authentication and obtain administrative access.",
  "mitigation": "Clear the RouterOS token store to revoke potentially captured tokens, and limit or disable WebFig access from untrusted networks. Restrict management access to trusted administrators until a vendor-fixed release is available.",
  "vendor": "MikroTik",
  "product": "RouterOS",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 7.23.6",
        ">= 7.24.0, <= 7.24.5"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "RouterOS",
      "purl": null
    }
  ],
  "cwes": [
    613
  ],
  "cvss_score": 9.1,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 30.687174666666667,
  "t0_at": "2026-10-21T17:16:40.843000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-21T18:38:50.929589+00:00",
      "days": 0.05706118737268519,
      "is_lower_bound": false,
      "measured_at": "2026-10-21T17:16:40.843000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-21T17:16:40.843000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-21T17:16:40.843000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-89035"
    }
  }
}

published 2026-10-21 18:08Z
last change 2026-10-21 20:26Z

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