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

6d 23h 42msince last run

14mAI analysis

timeline

0 = trigger signal

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 05:31Z

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.