CVE-2026-101990

waiting for further signals

GHSA-5vwc-cg2q-4mw8 ↗EUVD-2026-101480 ↗

no check availablenot proven exploitable

cve.orgpublic pockev

Juniper Networks Junos OS < 23.2R2-S7.7; >= 23.4, < 23.4R2-S8.13; >= 24.2, < 24.2R2-S5.5; >= 24.4, < 24.4R2-S5; >= 25.2, < 25.2R2-S2; >= 25.4, < 25.4R1-S3; >= 26.2, < 26.2R1-S2; < 23.2R2-S7.7-EVO; >= 23.4, < 23.4R2-S8.11-EVO; >= 24.2, < 24.2R2-S5.6-EVO; >= 24.4, < 24.4R2-S5-EVO; >= 25.2, < 25.2R2-S2-EVO; >= 25.4, < 25.4R1-S3-EVO; >= 26.2, < 26.2R1-S2-EVO; 23.4X100; >= 25.2X100, < 25.2X100-D35-EVO; >= 25.4X300, < 25.4X300-D40-EVO

fixed in 23.2R2-S7.7, 23.4R2-S8.13, 24.2R2-S5.5, 24.4R2-S5, 25.2R2-S2, 25.4R1-S3, 26.2R1-S2, 23.2R2-S7.7-EVO, 23.4R2-S8.11-EVO, 24.2R2-S5.6-EVO, 24.4R2-S5-EVO, 25.2R2-S2-EVO, 25.4R1-S3-EVO, 26.2R1-S2-EVO, 25.2X100-D35-EVO, 25.4X300-D40-EVO

CWE-121 Stack-based Buffer Overflow

ETK-2026-1608, permanent identifier

cvss9.3cna vendorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L

7d 00h 34msince last run

14mAI analysis

timeline

0 = cve.org publication

trigger signal (cve.org) +0hwaiting for further signals+5h32m

+2h

+4h

+8h

+10h

+12h

description

Junos OS and Junos OS Evolved are affected by a stack-based buffer overflow in the rpd routing daemon's BGP processing. A configured remote BGP peer can cause the daemon to fail, and may achieve code execution on Junos OS, when a FlowSpec update is selected for onward advertisement.

mitigation

Upgrade Junos OS to 23.2R2-S7.7, 23.4R2-S8.13, 24.2R2-S5.5, 24.4R2-S5, 25.2R2-S2, 25.4R1-S3, or 26.2R1-S2, as applicable. Upgrade Junos OS Evolved to 23.2R2-S7.7-EVO, 23.4R2-S8.11-EVO, 24.2R2-S5.6-EVO, 24.4R2-S5-EVO, 25.2R2-S2-EVO, 25.4R1-S3-EVO, 26.2R1-S2-EVO, 25.2X100-D35-EVO, or 25.4X300-D40-EVO, as applicable.

check

exploit

automation

contextual

auth required

EPSS

0.57%46th percentile

agent run time

14m

cve.org record, t = 0

2026-10-14 16:31Z

Δ to public poc

–

Δ to kev

–

outcome

Contextual: an exploit technique exists, but no deterministic check could cover this one.

source signals

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

2026-10-14 16:31Z
cve_org: trigger signal, started the run
https://www.cve.org/CVERecord?id=CVE-2026-101990

this entry in the feed

GET /api/v1/feed/CVE-2026-101990

{
  "etk_id": "ETK-2026-1608",
  "cve_id": "CVE-2026-101990",
  "display_id": "CVE-2026-101990",
  "ghsa_id": "GHSA-5vwc-cg2q-4mw8",
  "euvd_id": "EUVD-2026-101480",
  "status": "published",
  "anchor_state": "anchored",
  "title": "BGP-triggered stack buffer overflow in Junos rpd",
  "summary": "Junos OS and Junos OS Evolved are affected by a stack-based buffer overflow in the rpd routing daemon's BGP processing. A configured remote BGP peer can cause the daemon to fail, and may achieve code execution on Junos OS, when a FlowSpec update is selected for onward advertisement.",
  "mitigation": "Upgrade Junos OS to 23.2R2-S7.7, 23.4R2-S8.13, 24.2R2-S5.5, 24.4R2-S5, 25.2R2-S2, 25.4R1-S3, or 26.2R1-S2, as applicable. Upgrade Junos OS Evolved to 23.2R2-S7.7-EVO, 23.4R2-S8.11-EVO, 24.2R2-S5.6-EVO, 24.4R2-S5-EVO, 25.2R2-S2-EVO, 25.4R1-S3-EVO, 26.2R1-S2-EVO, 25.2X100-D35-EVO, or 25.4X300-D40-EVO, as applicable.",
  "vendor": "Juniper Networks",
  "product": "Junos OS",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 23.2R2-S7.7",
        ">= 23.4, < 23.4R2-S8.13",
        ">= 24.2, < 24.2R2-S5.5",
        ">= 24.4, < 24.4R2-S5",
        ">= 25.2, < 25.2R2-S2",
        ">= 25.4, < 25.4R1-S3",
        ">= 26.2, < 26.2R1-S2"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "23.2R2-S7.7",
        "23.4R2-S8.13",
        "24.2R2-S5.5",
        "24.4R2-S5",
        "25.2R2-S2",
        "25.4R1-S3",
        "26.2R1-S2"
      ],
      "package_name": "Junos OS",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 23.2R2-S7.7-EVO",
        ">= 23.4, < 23.4R2-S8.11-EVO",
        ">= 24.2, < 24.2R2-S5.6-EVO",
        ">= 24.4, < 24.4R2-S5-EVO",
        ">= 25.2, < 25.2R2-S2-EVO",
        ">= 25.4, < 25.4R1-S3-EVO",
        ">= 26.2, < 26.2R1-S2-EVO",
        "23.4X100",
        ">= 25.2X100, < 25.2X100-D35-EVO",
        ">= 25.4X300, < 25.4X300-D40-EVO"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "23.2R2-S7.7-EVO",
        "23.4R2-S8.11-EVO",
        "24.2R2-S5.6-EVO",
        "24.4R2-S5-EVO",
        "25.2R2-S2-EVO",
        "25.4R1-S3-EVO",
        "26.2R1-S2-EVO",
        "25.2X100-D35-EVO",
        "25.4X300-D40-EVO"
      ],
      "package_name": "Junos OS Evolved",
      "purl": null
    }
  ],
  "cwes": [
    121
  ],
  "cvss_score": 9.3,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L",
  "epss_score": 0.0057,
  "epss_percentile": 0.4602,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 13.9394664,
  "t0_at": "2026-10-14T16:31:48.632000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-14T16:31:48.632000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-14T16:31:48.632000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-101990"
    }
  }
}

published 2026-10-14 21:49Z
last change 2026-10-21 19:22Z

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