CVE-2025-21601

Что произошло

An Improper Following of Specification by Caller vulnerability in web management (J-Web, Captive Portal, 802.1X, Juniper Secure Connect (JSC) of Juniper Networks Junos OS on SRX Series, EX Series, MX240, MX480, MX960, QFX5120 Series, allows an unauthenticated, network-based attacker, sending genuine traffic targeted to the device to cause the CPU to climb until the device becomes unresponsive. Continuous receipt of these packets will create a sustained Denial of Service (DoS) condition. This issue affects Junos OS:  * All versions before 21.4R3-S9, * from 22.2 before 22.2R3-S5, * from 22.4 before 22.4R3-S4, * from 23.2 before 23.2R2-S3, * from 23.4 before 23.4R2-S3, * from 24.2 before 24.2R1-S1, 24.2R2. An indicator of compromise is to review the CPU % of the httpd process in the CLI: e.g.   show system processes extensive | match httpd  PID nobody       52   0   20M    191M select   2   0:01   80.00% httpd{httpd} <<<<< the percentage of httpd usage if high may be an indicator

Что делать

dpkg-query -W -f='${Package}	${Version}\n'

rpm -qa --qf '%{NAME}\t%{VERSION}-%{RELEASE}\n'

Get-HotFix | Select-Object HotFixID, InstalledOn

Продукты и затронутые версии

{
  "status": "affected",
  "version": "0",
  "lessThan": "21.4R3-S9",
  "versionType": "semver"
}

{
  "status": "affected",
  "version": "22.2",
  "lessThan": "22.2R3-S5",
  "versionType": "semver"
}

{
  "status": "affected",
  "version": "22.4",
  "lessThan": "22.4R3-S4",
  "versionType": "semver"
}

{
  "status": "affected",
  "version": "23.2",
  "lessThan": "23.2R2-S3",
  "versionType": "semver"
}

{
  "status": "affected",
  "version": "23.4",
  "lessThan": "23.4R2-S3",
  "versionType": "semver"
}

{
  "status": "affected",
  "version": "24.2",
  "lessThan": "24.2R1-S1, 24.2R2",
  "versionType": "semver"
}

CVSS: оценки и векторы

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/V:C/RE:M/U:Amber

Источники и ссылки

{
  "cwes": [
    "cve"
  ],
  "epss": {
    "source": "epss",
    "received_at": "2026-11-04T21:10:25.061398+00:00"
  },
  "title": {
    "source": "cve",
    "received_at": "2026-10-28T15:58:21.541439+00:00"
  },
  "scores": [
    "cve"
  ],
  "status": {
    "source": "cve",
    "received_at": "2026-10-28T15:58:21.541439+00:00"
  },
  "affected": [
    "cve"
  ],
  "published": {
    "source": "cve",
    "received_at": "2026-10-28T15:58:21.541439+00:00"
  },
  "solutions": [
    "cve"
  ],
  "percentile": {
    "source": "epss",
    "received_at": "2026-11-04T21:10:25.061398+00:00"
  },
  "references": [
    "cve"
  ],
  "description": {
    "source": "cve",
    "received_at": "2026-10-28T15:58:21.541439+00:00"
  },
  "workarounds": [
    "cve"
  ],
  "configurations": []
}

Хронология записи

1. Данные обновлены05.11.2026, 00:10
2. Данные обновлены04.11.2026, 00:09
3. Данные обновлены03.11.2026, 00:08
4. Данные обновлены02.11.2026, 00:07
5. Данные обновлены31.10.2026, 11:55
6. Данные обновлены30.10.2026, 14:09
7. Данные обновлены29.10.2026, 10:52
8. Опубликована28.10.2026, 18:58

Личная заметка и статус

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